Update modules/authorization/proc-defining-authorizations-in-external-files-by-using-the-operator.adoc

Co-authored-by: Oleksandr Andriienko <[email protected]>

Author: themr0c

modules/authorization/proc-defining-authorizations-in-external-files-by-using-the-operator.adoc

@@ -85,6 +85,7 @@ kind: Backstage
 spec:
   application:
     extraFiles:
+      mountPath: /opt/app-root/src
       configMaps:
         - name: rbac-policies
 ----