docs: more details for ListFilesRequest parent field

PiperOrigin-RevId: 431979329

Author: Google APIs

google/devtools/artifactregistry/v1beta2/file.proto

@@ -79,7 +79,8 @@ message File {
 
 // The request to list files.
 message ListFilesRequest {
-  // The name of the parent resource whose files will be listed.
+  // The name of the repository whose files will be listed. For example:
+  // "projects/p1/locations/us-central1/repositories/repo1
   string parent = 1;
 
   // An expression for filtering the results of the request. Filter rules are