Set END for detach_listener region tag (GoogleCloudPlatform#1957)

jlara310 · kurtisvg · commit 544aafaba012 · 2019-01-07T11:48:06.000-08:00
diff --git a/firestore/cloud-client/snippets.py b/firestore/cloud-client/snippets.py
@@ -632,7 +632,7 @@ def on_snapshot(doc_snapshot, changes, read_time):
     # [START detach_listener]
     # Terminate watch on a document
     doc_watch.unsubscribe()
-    # [START detach_listener]
+    # [END detach_listener]
 
 
 def listen_multiple():
