make sure defang up appears in both options

jordanstephens · jordanstephens · commit 6f3649f0c154 · 2024-12-03T14:50:13.000-05:00
diff --git a/docs/providers/gcp.md b/docs/providers/gcp.md
@@ -32,7 +32,7 @@ The Defang CLI will automatically check if they are set before running. Once you
 ```bash
 $ defang up --provider=gcp
 # or
-$ export DEFANG_PROVIDER=gcp
+$ DEFANG_PROVIDER=gcp defang up
 ```
 
 ## Location
