Better comment including url locations

app-config.yaml

@@ -185,8 +185,19 @@ catalog:
       #    groupFilter: securityEnabled eq false and mailEnabled eq true and groupTypes/any(c:c+eq+'Unified')
 
   locations:
+    # Add a location here to ingest it, for example from an URL:
+    #
+    #     - type: url
+    #       target: https://github.com/backstage/backstage/blob/master/packages/catalog-model/examples/all-components.yaml
+    #
+    # For local development you can use a file location instead:
+    #
+    #     - type: file
+    #       target: ../catalog-model/examples/all-components.yaml
+    #
     # File locations are relative to the current working directory of the
     # backend, for example packages/backend/.
+
     # Backstage example components
     - type: file
       target: ../catalog-model/examples/all-components.yaml