Unified code comment style

[michael-marron]

Changed the comment style from /**/ to //
Issue:
#852

Description

Please explain the changes you made, including a reference to the related issue if applicable

Checklist

• Required by CI: Code is auto formatted using clang-format
• Extend the tutorials / documentation reference
• Document API changes relevant to the user in the MIGRATION.md notes
• Create tests, which fail without this PR reference
• Include a screenshot if changing a GUI
• While waiting for someone to review your request, please help review another open pull request to support the maintainers

[vatanaksoytezer]

@michael-marron thank you for the PR. Can you run pre-commit so formatting errors are gone, https://github.com/ros-planning/moveit2_tutorials#formatting-and-style might help get you running pretty quick.

[codecov]

Codecov Report

Merging #1053 (f086595) into main (cf87738) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1053      +/-   ##
==========================================
+ Coverage   51.11%   51.12%   +0.01%     
==========================================
  Files         380      380              
  Lines       31737    31737              
==========================================
+ Hits        16218    16221       +3     
+ Misses      15519    15516       -3     

Impacted Files	Coverage Δ
moveit_core/kinematic_constraints/src/utils.cpp	24.53% <ø> (ø)
moveit_core/planning_scene/src/planning_scene.cpp	52.53% <ø> (ø)
moveit_core/robot_state/src/robot_state.cpp	47.44% <ø> (ø)
moveit_core/utils/src/message_checks.cpp	83.34% <ø> (ø)
...dl_kinematics_plugin/src/kdl_kinematics_plugin.cpp	76.43% <0.00%> (+1.08%)	⬆️

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