feat(API): improve delete /projects/{project_id}/keys/{id}/key_links documentation

[Stephen Lumenta (sbl)]

Improves the documentation for delete /projects/{project_id}/keys/{id}/key_links: sharper descriptions, parameter docs, error responses, and usage examples.

Drafted with AI assistance and grounded in the API implementation. Please review for technical accuracy before merging; nothing is merged automatically.

🤖 Generated with Claude Code

[github-actions]

API changelog (oasdiff)

Doc-only edits (descriptions, examples) do not appear here.

7 changes: 0 error, 3 warning, 4 info
warning	[optional-response-header-removed] at doc/compiled.json
	in API DELETE /projects/{project_id}/keys/{id}/key_links
		the optional response header `x-rate-limit-limit` removed for the status `422`

warning	[optional-response-header-removed] at doc/compiled.json
	in API DELETE /projects/{project_id}/keys/{id}/key_links
		the optional response header `x-rate-limit-remaining` removed for the status `422`

warning	[optional-response-header-removed] at doc/compiled.json
	in API DELETE /projects/{project_id}/keys/{id}/key_links
		the optional response header `x-rate-limit-reset` removed for the status `422`

info	[new-optional-request-property] at doc/compiled.json
	in API DELETE /projects/{project_id}/keys/{id}/key_links
		added the new optional request property `strategy`

info	[request-body-became-optional] at doc/compiled.json
	in API DELETE /projects/{project_id}/keys/{id}/key_links
		request body became optional

info	[response-media-type-added] at doc/compiled.json
	in API DELETE /projects/{project_id}/keys/{id}/key_links
		added the media type `application/json` for the response with the status `200`

info	[response-optional-property-added] at doc/compiled.json
	in API DELETE /projects/{project_id}/keys/{id}/key_links
		added the optional property `errors/items/code` to the response with the `422` status