Add $ to Related-Projects, Releases and Contributing. (backport #5357)

[mergify]

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This is an automatic backport of pull request #5357 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of c08c295 has failed:

On branch mergify/bp/jazzy/pr-5357
Your branch is up to date with 'origin/jazzy'.

You are currently cherry-picking commit c08c295.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   source/Releases/Release-Eloquent-Elusor.rst
	modified:   source/Releases/Release-Galactic-Geochelone.rst
	modified:   source/Releases/Release-Humble-Hawksbill.rst
	modified:   source/Releases/Release-Jazzy-Jalisco.rst
	modified:   source/The-ROS2-Project/Contributing/Developer-Guide.rst

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   source/Related-Projects/Visualizing-ROS-2-Data-With-Foxglove.rst
	both modified:   source/The-ROS2-Project/Contributing/Contributing-To-ROS-2-Documentation.rst

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally