Update CODEOWNERS

[lcawl]

Summary

Relates to #137240

As we start generating alerting and connector APIs from open API specifications, it is a good idea to require review of any changes to those API docs.

This PR also removes mandatory review for non-API-related responseOps documentation, since it seemed like an unnecessary extra step in that case.

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 99ec462

Metrics [docs]

Unknown metric groups

ESLint disabled in files

id	before	after	diff
osquery	1	2	+1

ESLint disabled line counts

id	before	after	diff
enterpriseSearch	19	21	+2
fleet	59	65	+6
osquery	109	115	+6
securitySolution	443	449	+6
total			+20

Total ESLint disabled count

id	before	after	diff
enterpriseSearch	20	22	+2
fleet	67	73	+6
osquery	110	117	+7
securitySolution	520	526	+6
total			+21

History

• 💛 Build #88948 was flaky 7740b7b

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[mikecote]

LGTM!