docs: fix access token description

The write_repository allow read action.
It is needed to offer Maintainer role in order to affect protected branch.

README.md

@@ -324,7 +324,7 @@ The template handles both classic variable and file variable.
 Simply specify :lock: `$GIT_USERNAME` and :lock: `$GIT_PASSWORD` as protected project variables and they will be dynamically 
 evaluated and appended to the Maven release arguments.
 
-Note that the password should be an access token with `read_repository` and `write_repository` scopes.
+Note that the password should be an access token with `write_repository` scope and `Maintainer` role.
 
 :warning: The `scm` connections in your `pom.xml` should use the `https` protocol