Update manage-gateways.mdx

Author: drew

docs/sandboxes/manage-gateways.mdx

@@ -113,7 +113,7 @@ openshell gateway add ssh://user@remote-host:8080
 
 ### Local Gateway
 
-Register a local mTLS gateway running outside the CLI:
+Register a local mTLS gateway:
 
 ```shell
 openshell gateway add https://127.0.0.1:8080 --local