Update button permission (#82)

Author: ConnorMacKenzieLayer

docs/advanced-workflows/groups-and-permissions.mdx

@@ -51,7 +51,7 @@ following permissions:
 
 - `repo.<reposirory name>.controls.retry` the ability to retry a run
 - `repo.<reposirory name>.controls.cancel` the ability to cancel a run
-- `repo.<reposirory name>.button` the ability to click buttons defined in
+- `repo.<reposirory name>.controls.button` the ability to click buttons defined in
   Layerfiles
 
 ### Secrets