refactor(docs-infra): exit loop after first match

Currently, the `docsAlertExtension` performs unnecessary iterations.

Author: alan-agius4

adev/shared-docs/pipeline/guides/extensions/docs-alert.ts

@@ -49,6 +49,8 @@ export const docsAlertExtension = {
           severityLevel: level,
           alert: possibleMatch,
         };
+
+        break;
       }
     }