Fix changelog category names

[m1r0]

Resolves #7113

This PR reverts the changelog category names changed in #6804.

I wasn't able to find a way to add a category description, so a future P2 post will explain how to use them.

Proposed Changes

• Revert to the old changelog category names.

Testing Instructions

1. Run npm run changelog.
2. Make sure the category names are correct.

Pre-Merge Checklist

• PR title and description contain sufficient detail and accurately describe the changes
• Acceptance criteria is met
• Decisions are publicly documented
• Adheres to coding standards (PHP, JavaScript, CSS, HTML)
• All strings are translatable (without concatenation, handles plurals)
• Follows our naming conventions (P6rkRX-4oA-p2)
• Hooks (p6rkRX-1uS-p2) and functions are documented
• New UIs are responsive and use a mobile-first approach
• New UIs match the designs
• Different user privileges (admin, teacher, subscriber) are tested as appropriate
• Code is tested on the minimum supported PHP and WordPress versions
• User interface changes have been tested on the latest versions of Chrome, Firefox and Safari
• "Needs Documentation" label is added if this change requires updates to documentation
• Known issues are created as new GitHub issues

[codecov]

Codecov Report

Merging #7143 (d906e71) into trunk (05932d8) will increase coverage by 0.11%.
Report is 18 commits behind head on trunk.
The diff coverage is 91.95%.

@@             Coverage Diff              @@
##              trunk    #7143      +/-   ##
============================================
+ Coverage     49.36%   49.47%   +0.11%     
- Complexity    10546    10569      +23     
============================================
  Files           575      578       +3     
  Lines         44537    44602      +65     
  Branches        402      402              
============================================
+ Hits          21987    22069      +82     
+ Misses        22223    22206      -17     
  Partials        327      327              

Files Changed	Coverage Δ
...d-jobs/class-sensei-scheduler-action-scheduler.php	83.33% <0.00%> (ø)
includes/class-sensei.php	23.14% <0.00%> (-0.28%)	⬇️
...ternal/action-scheduler/class-action-scheduler.php	100.00% <100.00%> (ø)
...er/migrations/class-student-progress-migration.php	81.63% <100.00%> (+0.73%)	⬆️
...nt-progress/jobs/class-migration-job-scheduler.php	100.00% <100.00%> (ø)
...rnal/student-progress/jobs/class-migration-job.php	100.00% <100.00%> (ø)
...al/student-progress/tools/class-migration-tool.php	100.00% <100.00%> (+68.96%)	⬆️

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ebc6e89...d906e71. Read the comment docs.

[Imran92]

Works as before 👍