remove boilerplate code

Author: krofax

Diff for: pages/operators/chain-operators/tutorials/migrating-permissionless.mdx

@@ -287,7 +287,7 @@ After completing all previous steps and verifying their successful operation:
 
 1.  Set the `respectedGameType` on the `OptimismPortal` to `CANNON` (game type `0`) using OPCM:
     ```bash
-    npx opcm set-respected-game-type \
+    opcm set-respected-game-type \
       --game-type 0
     ```