fix: capitalization in headers

[reginapizza]

Closes #5691

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• Optional. My organization is added to USERS.md.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).

Note: STATUS BADGE header (when enabled) will also be capitalized, however this will be incorporated in PR #5678

[codecov-io]

Codecov Report

Merging #5692 (3cc2c60) into master (d8cb02b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5692   +/-   ##
=======================================
  Coverage   40.96%   40.96%           
=======================================
  Files         144      144           
  Lines       19395    19395           
=======================================
  Hits         7945     7945           
  Misses      10339    10339           
  Partials     1111     1111           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d8cb02b...260b7a7. Read the comment docs.

[jannfis]

LGTM. Good catch, thank you!