Cleanup

examples/async_server.py

@@ -31,8 +31,7 @@ async def new_connection(stream):
 
 def parse_args():
     parser = argparse.ArgumentParser(
-        usage="""Runs the server bound to the\
-        given address/port ADDRESS. """
+        usage="""Runs the server bound to the given address/port ADDRESS. """
     )
 
     parser.add_argument("address", help="ADDRESS:PORT")