chore: fix CODEOWNERS to not assign reviewers to API ref updates (#10870)

Author: anakin87

.github/CODEOWNERS

@@ -6,9 +6,9 @@
 # when someone opens a pull request.
 *                       @deepset-ai/open-source-engineering
 
+# Documentation
+*.md                    @deepset-ai/documentation @deepset-ai/open-source-engineering
+
 # Auto-synced API reference (no human reviewers needed, auto-approved by GitHub bot)
 docs-website/reference/
 docs-website/reference_versioned_docs/
-
-# Documentation
-*.md                    @deepset-ai/documentation @deepset-ai/open-source-engineering