fix: correct time format in Python quickstart (#2117)

* fix : remove "Z" after isoformat in python quickstart

* fix: remove invalid 'Z' from isoformat

Author: Marc416

calendar/quickstart/quickstart.py

@@ -53,7 +53,7 @@ def main():
     service = build("calendar", "v3", credentials=creds)
 
     # Call the Calendar API
-    now = datetime.datetime.now(tz=datetime.timezone.utc).isoformat() + "Z"  # 'Z' indicates UTC time
+    now = datetime.datetime.now(tz=datetime.timezone.utc).isoformat()
     print("Getting the upcoming 10 events")
     events_result = (
         service.events()