Migrate gsutil usage to gcloud storage (#13731)

Co-authored-by: Jennifer Davis <sigje@google.com>

Author: bhandarivijay-png

videointelligence/samples/analyze/resources/README.md

@@ -9,7 +9,7 @@ Copy from Google Cloud Storage to this folder for testing video analysis
 of local files. For `cat.mp4` used in the usage example, run the following
 `gcloud` command.
 
-    gsutil cp gs://cloud-samples-data/video/cat.mp4 .
+    gcloud storage cp gs://cloud-samples-data/video/cat.mp4 .
 
 Now, when you run the following command, the video used for label detection
 will be passed from here: