fixup! add some hookshot config validation

roles/matrix-bridge-hookshot/tasks/validate_config.yml

@@ -15,7 +15,7 @@
       You need to define a required configuration setting (`{{ item }}`) to enable GitHub.
   when: "matrix_hookshot_github_enabled and vars[item] == ''"
   with_items:
-    - "matrix_hookshot_github_id"
+    - "matrix_hookshot_github_appid"
     - "matrix_hookshot_github_secret"
 
 - name: Fail if required GitHub OAuth settings not defined