Use PEP-8 style in logging example
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index 26fa97e..1005b79 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -159,7 +159,7 @@
 
       FORMAT = '%(asctime)-15s %(clientip)s %(user)-8s %(message)s'
       logging.basicConfig(format=FORMAT)
-      d = { 'clientip' : '192.168.0.1', 'user' : 'fbloggs' }
+      d = {'clientip': '192.168.0.1', 'user': 'fbloggs'}
       logger = logging.getLogger('tcpserver')
       logger.warning('Protocol problem: %s', 'connection reset', extra=d)