fix codeowners file

CODEOWNERS

@@ -1,28 +1,21 @@
 # Default owners for everything in the repo, unless a later match takes precedence.
-
-- @grafana/loki-team
+* @grafana/loki-team
 
 # Documentation.
-
 /docs/ @grafana/docs-logs @grafana/loki-team
 /.github/workflows/deploy-pr-preview.yml @grafana/docs-logs
 
 # Loki operator
-
 /operator/ @grafana/loki-team @periklis @xperimental @JoaoBraveCoding
-/.github/workflows/operator\* @grafana/loki-team @periklis @xperimental @JoaoBraveCoding
+/.github/workflows/operator* @grafana/loki-team @periklis @xperimental @JoaoBraveCoding
 
 # Logql grammar
-
 # The observability logs team is listed as co-codeowner for grammar file. This is to receive notifications about updates, so these can be implemented in https://github.com/grafana/lezer-logql
-
 /pkg/logql/syntax/expr.y @grafana/observability-logs @grafana/loki-team
 
 # Nix
-
 /nix/ @trevorwhitney
 flake.nix @trevorwhitney
 
 # No owners - allows sub-maintainers to merge changes.
-
 CHANGELOG.md