Fix error msg reference to request-review-branch

Fix error msg reference to request-review-branch so that it is now
accurate with the current state of the commands.

[changelog]
fixed: err msg referencing old commands

<!-- ps-id: 6f532268-328c-4c51-bd6a-ed2074333759 -->

src/commands/integrate.rs

@@ -56,7 +56,7 @@ pub fn integrate(
                         r#"
   Looks like the patch(es) haven't had a branch associated with them yet.
 
-  You can associate them with gps request-review-branch and gps sync.
+  You can associate them with gps branch and gps request-review.
 
   Or you can skip saftey checks like this one with --force.
         "#,