docs: fix active memory gateway command

docs/concepts/active-memory.md

@@ -57,7 +57,7 @@ available.
 After that, restart the gateway:
 
 ```bash
-node scripts/run-node.mjs gateway --profile dev
+openclaw gateway
 ```
 
 To inspect it live in a conversation:
@@ -102,7 +102,7 @@ Start with this in `openclaw.json`:
 Then restart the gateway:
 
 ```bash
-node scripts/run-node.mjs gateway --profile dev
+openclaw gateway
 ```
 
 What this means: