Add aqualls as codeowner for some directories

Test out adding myself as a codeowner for the larger directories
owned by the Monitor and Configure stages.

.gitlab/CODEOWNERS

@@ -8,11 +8,15 @@
 
 # Technical writing team are the default reviewers for all markdown docs
 /doc/ @gl-docsteam
-# Dev and Doc guidelines
+# Doc subpaths
+/doc/administration/monitoring/ @aqualls
 /doc/development/ @marcia @mjang1
 /doc/development/documentation/ @mikelewis
 /doc/ci @marcel.amirault @sselhorn
-/doc/.linting @marcel.amirault @eread @aqualls @mikelewis
+/doc/user/clusters @aqualls
+/doc/user/infrastructure @aqualls
+/doc/user/project/clusters @aqualls
+/doc/.vale/ @marcel.amirault @eread @aqualls @mikelewis
 
 # Frontend maintainers should see everything in `app/assets/`
 *.scss @annabeldunstone @gitlab-org/maintainers/frontend