Don't run events example for more than 20sec.

Author: mathsman5133

docs/examples/events_example.rst

@@ -7,4 +7,4 @@ This is an example of a basic events setup.
 .. literalinclude:: ../../examples/events.py
    :language: py
    :linenos:
-   :lines: 1-126,136-
+   :lines: 1-126,138-

examples/events.py

@@ -132,6 +132,8 @@ class Handler(logging.Handler):
         def emit(self, record) -> None:
             sys.exit(0)
     log.addHandler(Handler())
+    # we don't wanna wait forever for an event, so if it sets up OK lets call it quits.
+    client.loop.call_later(20.0, sys.exit, 0)
 
 client.loop.run_until_complete(add_clan_players())
 client.loop.run_forever()