doc: apply new format to git-branch man page

- Switch the synopsis to a synopsis block which automatically
  formats placeholders in italics and keywords in monospace
- Use _<placeholder>_ instead of <placeholder> in the description
- Use `backticks` for keywords and more complex option
descriptions. The new rendering engine applies synopsis rules to
these spans.

Signed-off-by: Jean-Noël Avila <[email protected]>

Author: jnavila

Documentation/config/branch.adoc

@@ -1,41 +1,42 @@
-branch.autoSetupMerge::
-	Tells 'git branch', 'git switch' and 'git checkout' to set up new branches
+`branch.autoSetupMerge`::
+	Tells `git branch`, `git switch` and `git checkout` to set up new branches
 	so that linkgit:git-pull[1] will appropriately merge from the
 	starting point branch. Note that even if this option is not set,
 	this behavior can be chosen per-branch using the `--track`
-	and `--no-track` options. The valid settings are: `false` -- no
-	automatic setup is done; `true` -- automatic setup is done when the
-	starting point is a remote-tracking branch; `always` --
-	automatic setup is done when the starting point is either a
-	local branch or remote-tracking branch; `inherit` -- if the starting point
-	has a tracking configuration, it is copied to the new
-	branch; `simple` -- automatic setup is done only when the starting point
+	and `--no-track` options.  This option defaults to `true`. The valid settings
+	are:
+`false`;; no automatic setup is done
+`true`;; automatic setup is done when the starting point is a remote-tracking branch
+`always`;; automatic setup is done when the starting point is either a
+	local branch or remote-tracking branch
+`inherit`;; if the starting point has a tracking configuration, it is copied to the new
+	branch
+`simple`;; automatic setup is done only when the starting point
 	is a remote-tracking branch and the new branch has the same name as the
-	remote branch. This option defaults to true.
+	remote branch.
 
-branch.autoSetupRebase::
-	When a new branch is created with 'git branch', 'git switch' or 'git checkout'
+`branch.autoSetupRebase`::
+	When a new branch is created with `git branch`, `git switch` or `git checkout`
 	that tracks another branch, this variable tells Git to set
-	up pull to rebase instead of merge (see "branch.<name>.rebase").
-	When `never`, rebase is never automatically set to true.
-	When `local`, rebase is set to true for tracked branches of
-	other local branches.
-	When `remote`, rebase is set to true for tracked branches of
-	remote-tracking branches.
-	When `always`, rebase will be set to true for all tracking
-	branches.
-	See "branch.autoSetupMerge" for details on how to set up a
-	branch to track another branch.
-	This option defaults to never.
+	up pull to rebase instead of merge (see `branch.<name>.rebase`).
+	The valid settings are:
+`never`;; rebase is never automatically set to true.
+`local`;; rebase is set to true for tracked branches of other local branches.
+`remote`;; rebase is set to true for tracked branches of remote-tracking branches.
+`always`;; rebase will be set to true for all tracking branches.
 
-branch.sort::
++
+See `branch.autoSetupMerge` for details on how to set up a branch to track another branch.
+This option defaults to `never`.
+
+`branch.sort`::
 	This variable controls the sort ordering of branches when displayed by
-	linkgit:git-branch[1]. Without the "--sort=<value>" option provided, the
+	linkgit:git-branch[1]. Without the `--sort=<value>` option provided, the
 	value of this variable will be used as the default.
 	See linkgit:git-for-each-ref[1] field names for valid values.
 
-branch.<name>.remote::
-	When on branch <name>, it tells 'git fetch' and 'git push'
+`branch.<name>.remote`::
+	When on branch _<name>_, it tells `git fetch` and `git push`
 	which remote to fetch from or push to.  The remote to push to
 	may be overridden with `remote.pushDefault` (for all branches).
 	The remote to push to, for the current branch, may be further
@@ -46,58 +47,58 @@ branch.<name>.remote::
 	Additionally, `.` (a period) is the current local repository
 	(a dot-repository), see `branch.<name>.merge`'s final note below.
 
-branch.<name>.pushRemote::
-	When on branch <name>, it overrides `branch.<name>.remote` for
+`branch.<name>.pushRemote`::
+	When on branch _<name>_, it overrides `branch.<name>.remote` for
 	pushing.  It also overrides `remote.pushDefault` for pushing
-	from branch <name>.  When you pull from one place (e.g. your
+	from branch _<name>_.  When you pull from one place (e.g. your
 	upstream) and push to another place (e.g. your own publishing
 	repository), you would want to set `remote.pushDefault` to
 	specify the remote to push to for all branches, and use this
 	option to override it for a specific branch.
 
-branch.<name>.merge::
-	Defines, together with branch.<name>.remote, the upstream branch
-	for the given branch. It tells 'git fetch'/'git pull'/'git rebase' which
-	branch to merge and can also affect 'git push' (see push.default).
-	When in branch <name>, it tells 'git fetch' the default
-	refspec to be marked for merging in FETCH_HEAD. The value is
+`branch.<name>.merge`::
+	Defines, together with `branch.<name>.remote`, the upstream branch
+	for the given branch. It tells `git fetch`/`git pull`/`git rebase` which
+	branch to merge and can also affect `git push` (see `push.default`).
+	When in branch _<name>_, it tells `git fetch` the default
+	refspec to be marked for merging in `FETCH_HEAD`. The value is
 	handled like the remote part of a refspec, and must match a
 	ref which is fetched from the remote given by
-	"branch.<name>.remote".
-	The merge information is used by 'git pull' (which first calls
-	'git fetch') to lookup the default branch for merging. Without
-	this option, 'git pull' defaults to merge the first refspec fetched.
+	`branch.<name>.remote`.
+	The merge information is used by `git pull` (which first calls
+	`git fetch`) to lookup the default branch for merging. Without
+	this option, `git pull` defaults to merge the first refspec fetched.
 	Specify multiple values to get an octopus merge.
-	If you wish to setup 'git pull' so that it merges into <name> from
+	If you wish to setup `git pull` so that it merges into <name> from
 	another branch in the local repository, you can point
 	branch.<name>.merge to the desired branch, and use the relative path
-	setting `.` (a period) for branch.<name>.remote.
+	setting `.` (a period) for `branch.<name>.remote`.
 
-branch.<name>.mergeOptions::
-	Sets default options for merging into branch <name>. The syntax and
+`branch.<name>.mergeOptions`::
+	Sets default options for merging into branch _<name>_. The syntax and
 	supported options are the same as those of linkgit:git-merge[1], but
 	option values containing whitespace characters are currently not
 	supported.
 
-branch.<name>.rebase::
-	When true, rebase the branch <name> on top of the fetched branch,
+`branch.<name>.rebase`::
+	When true, rebase the branch _<name>_ on top of the fetched branch,
 	instead of merging the default branch from the default remote when
-	"git pull" is run. See "pull.rebase" for doing this in a non
+	`git pull` is run. See `pull.rebase` for doing this in a non
 	branch-specific manner.
 +
-When `merges` (or just 'm'), pass the `--rebase-merges` option to 'git rebase'
+When `merges` (or just `m`), pass the `--rebase-merges` option to `git rebase`
 so that the local merge commits are included in the rebase (see
 linkgit:git-rebase[1] for details).
 +
-When the value is `interactive` (or just 'i'), the rebase is run in interactive
+When the value is `interactive` (or just `i`), the rebase is run in interactive
 mode.
 +
 *NOTE*: this is a possibly dangerous operation; do *not* use
 it unless you understand the implications (see linkgit:git-rebase[1]
 for details).
 
-branch.<name>.description::
+`branch.<name>.description`::
 	Branch description, can be edited with
 	`git branch --edit-description`. Branch description is
-	automatically added to the format-patch cover letter or
-	request-pull summary.
+	automatically added to the `format-patch` cover letter or
+	`request-pull` summary.