Updating CONTRIBUTING.md (#3352)

* Fix link in CONTRIBUTING.md

Signed-off-by: Kim Brose <2803622+HarHarLinks@users.noreply.github.com>

* Tweak wording

Co-authored-by: Jack S. <181536874+awtj8o81ryywg793@users.noreply.github.com>
Signed-off-by: Kim Brose <2803622+HarHarLinks@users.noreply.github.com>

* update process for DCO app

Signed-off-by: HarHarLinks <2803622+HarHarLinks@users.noreply.github.com>

---------

Signed-off-by: Kim Brose <2803622+HarHarLinks@users.noreply.github.com>
Signed-off-by: HarHarLinks <2803622+HarHarLinks@users.noreply.github.com>
Co-authored-by: Jack S. <181536874+awtj8o81ryywg793@users.noreply.github.com>

Author: HarHarLinks

CONTRIBUTING.md

@@ -28,12 +28,12 @@ The tools we have at our disposal are:
 
 We try to keep a paper trail for all the decisions and implementation:
 
-- All of the changes on the website need to happen [through a Pull Request](https://github.com/matrix-org/matrix.org/pulls)
-  - The only exception to this rules are if we broke things preventing our usual workflow.
-- Pull Requests which do changes to existing content or add content outside of the blog should fix a documented and accepted [issue](https://github.com/matrix-org/matrix.org/pulls)
+- All of the changes on the website need to happen through a [Pull Request](https://github.com/matrix-org/matrix.org/pulls).
+  - The only exception to this rule is if we break things that prevent our usual workflow.
+- Pull Requests which make changes to existing content or add content outside of the blog should fix a documented and accepted [Issue](https://github.com/matrix-org/matrix.org/issues).
 - Issues are reviewed by the maintainers of the project (the [Website and Content Working Group](https://matrix.org/foundation/working-groups/)). Some discussion can happen in [#matrix.org-website:matrix.org](https://matrix.to/#/%23matrix.org-website:matrix.org) but all decisions are logged in the issues themselves.
 
-We keep this paper trail to avoid having to review Pull Requests "fixing" things we don't need or want to be fixed. Of course we try to remain flexible where it makes sense, but want to stick to this process as much as possible.
+We keep this paper trail to avoid having to review Pull Requests "fixing" things we don't need or want to be fixed. Of course, we try to remain flexible where it makes sense, but we want to stick to this process as much as possible.
 
 ## Sign off
 
@@ -81,7 +81,7 @@ By making a contribution to this project, I certify that:
     this project or the open source license(s) involved.
 ```
 
-If you agree to this for your contribution, then all that's needed is to include the line in your commit or pull request comment:
+If you agree to this for your contribution, then all that's needed is to include the line in your commit:
 
 ```
 Signed-off-by: Your Name <your@email.example.org>