Correct the ROS and Fortress bridge

[Mohammadreza-Beygifard]

🦟 Bug fix

Fixes #429

Summary

I am updating the documentation of the ROS2 <-> Gazezebo fortress bridge. By mistake in the documentation the command ros_ign_bridge was used; However, the correct command to create the bridge is ros2 run ros_gz_bridge parameter_bridge. For more details, please refer to the issue.

Checklist

• [ ] Signed all commits for DCO
• [ ] Added tests
• [x] Updated documentation (as needed)
• [ ] Updated migration guide (as needed)
• [ ] Consider updating Python bindings (if the library has them)
• [x] codecheck passed (See contributing)
• [x] All tests passed (See test coverage)
• [ ] While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[Mohammadreza-Beygifard]

@azeey I have addressed the conflict and everything looks good now, please inform me if there is anything else I can do. Best!

[pxalcantara]

@azeey How are you? just to understand the process. When will be made the next deploy of the documentation and this update will be implemented?

@Mohammadreza-Beygifard congratulations and thanks for your contribution, I had the same problem!