Add $ DDS-Implementations (backport #5355)

[mergify]

---

This is an automatic backport of pull request #5355 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 93a7d34 has failed:

On branch mergify/bp/jazzy/pr-5355
Your branch is up to date with 'origin/jazzy'.

You are currently cherry-picking commit 93a7d34.
  (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/Installation/RMW-Implementations/DDS-Implementations/Working-with-Eclipse-CycloneDDS.rst
	modified:   source/Installation/RMW-Implementations/DDS-Implementations/Working-with-GurumNetworks-GurumDDS.rst
	modified:   source/Installation/RMW-Implementations/DDS-Implementations/Working-with-RTI-Connext-DDS.rst

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   source/Installation/RMW-Implementations/DDS-Implementations/Working-with-eProsima-Fast-DDS.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

[github-actions]

HTML artifacts: https://github.com/ros2/ros2_documentation/actions/runs/14684461563/artifacts/3015242714.

To view the resulting site:

1. Click on the above link to download the artifacts archive
2. Extract it
3. Open html-artifacts-5374/index.html in your favorite browser