Standardize Doxygen parameter formatting for systems A-N

[mabelzhang]

🦟 Bug fix

We were looking to improve the Doxygen pages for system plugins and noticed some huge paragraphs that meant to be bullet lists, and inconsistencies in headings.

This PR standardizes the formatting for SDF parameters for systems starting with letter A to N (which is not to say I will do the same for O to Z, as this isn't really the task I'm tackling... just fixing on the way as I familiarize myself with how systems are documented).
A-N is 46 systems. There are only 24 remaining that others can fight over.

Summary

This is the standard being adopted (comes from AckermannSteering, not because it's the first in the alphabetical list, but because its rendered page looks the best):

• Heading size should be ## System Parameters, to appear the same size as the preset "Detailed Description" heading
• Parameters should be in bullets, otherwise there's a variety of rendered results, especially when you have sub-bullets too, or if you do a \sa, or they are all in one huge paragraph.
• Parameter font should be in code face, ideally surrounded by angle brackets, e.g. - <param>
• Most parameters are followed by a colon, as in - <param>:, but I let some pass with hyphen, because it wasn't worth the effort.
• I wasn't too picky about indentation after the first line, because it wasn't worth the effort

To test

colcon build --packages-select gz-sim8

In a browser, navigate to build/gz-sim8/doxygen/html/index.html
Click on the “gz::sim::systems” link.
Look at the corresponding system pages.

Compare to the live render here before the fix: https://gazebosim.org/api/sim/8/

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• 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.

[codecov]

Codecov Report

Merging #2183 (414c063) into gz-sim8 (8c2fb9b) will increase coverage by 0.11%.
Report is 1 commits behind head on gz-sim8.
The diff coverage is n/a.

❗ Current head 414c063 differs from pull request most recent head 5134d21. Consider uploading reports for the commit 5134d21 to get more accurate results

@@             Coverage Diff             @@
##           gz-sim8    #2183      +/-   ##
===========================================
+ Coverage    65.92%   66.04%   +0.11%     
===========================================
  Files          323      323              
  Lines        30719    30718       -1     
===========================================
+ Hits         20251    20287      +36     
+ Misses       10468    10431      -37     

Files	Coverage Δ
...rc/systems/ackermann_steering/AckermannSteering.hh	100.00% <ø> (ø)
src/systems/breadcrumbs/Breadcrumbs.hh	100.00% <ø> (ø)
src/systems/buoyancy/Buoyancy.hh	100.00% <ø> (ø)
src/systems/detachable_joint/DetachableJoint.hh	100.00% <ø> (ø)
src/systems/diff_drive/DiffDrive.hh	100.00% <ø> (ø)
src/systems/elevator/Elevator.hh	100.00% <ø> (ø)
src/systems/joint_controller/JointController.hh	100.00% <ø> (ø)
...int_position_controller/JointPositionController.hh	100.00% <ø> (ø)
...stems/joint_state_publisher/JointStatePublisher.hh	100.00% <ø> (ø)
...ms/joint_traj_control/JointTrajectoryController.hh	100.00% <ø> (ø)
... and 3 more

... and 2 files with indirect coverage changes

[azeey]

Other than the @ahcorde's unresolved issue, LGTM!

[mabelzhang]

Addressed

[mabelzhang]

@ahcorde Merging is blocked until change requested changes to green check :)

.