[DOCS] Adapt path to Documentation folder on migration (#232)

Most users would run the command in the project's root folder (like now
for the Sphinx rendering method). This change eases running the command,
as it is just copy'n'paste now.

Author: brotkrueml

Documentation/Migration/Index.rst

@@ -6,7 +6,7 @@
 Migration
 =========
 
-If you want to migrate from using Sphinx to render TYPO3 documentation to
+If you want to migrate from using Sphinx to render TYPO3 documentation
 using the render-guides, the file :file:`Documentation/Settings.cfg` has to be
 replaced by an XML file, :file:`Documentation/guides.xml`.
 
@@ -25,27 +25,53 @@ With official Docker container
     Work in progress - Note that we will use `:stable` at a later point to always provide stable
     images with a locked dependency and theme asset set.
 
-..  code-block:: sh
+To migrate your settings to the new rendering method, run the following
+command in your project's root folder:
 
-    docker run --rm --pull always -v $(pwd):/project -it ghcr.io/typo3-documentation/render-guides:latest migrate /path/to/Documentation
+..  code-block:: shell
+
+    docker run --rm --pull always -v $(pwd):/project -it ghcr.io/typo3-documentation/render-guides:latest migrate Documentation
+
+The last option is the folder (here: :file:`Documentation`). When running the
+command from another folder than the project's root folder, adapt the given
+path accordingly.
 
 With make
 =========
 
-..  code-block:: sh
+To migrate your settings to the new rendering method, run the following
+command in your project's root folder:
+
+..  code-block:: shell
+
+    make migrate-settings path=Documentation
 
-    make migrate-settings path=path/to/Documentation
+When running the command from another folder than the project's root folder,
+adapt the given path accordingly.
 
 With ddev
 =========
 
-..  code-block:: sh
+To migrate your settings to the new rendering method, run the following
+command in your project's root folder:
 
-    ddev composer make migrate-settings path=path/to/Documentation
+..  code-block:: shell
+
+    ddev composer make migrate-settings path=Documentation
+
+When running the command from another folder than the project's root folder,
+adapt the given path accordingly.
 
 With PHP
 ========
 
-..  code-block:: sh
+To migrate your settings to the new rendering method, run the following
+command in your project's root folder:
+
+..  code-block:: shell
+
+    packages/typo3-guides-cli/bin/typo3-guides migrate Documentation
 
-    packages/typo3-guides-cli/bin/typo3-guides migrate path/to/Documentation
+The last option is the folder (here: :file:`Documentation`). When running the
+command from another folder than the project's root folder, adapt the given
+path accordingly.