readme: fix comment on context logger

README.md

diff --git a/README.md b/README.md
index be46da2..d55f909 100644
--- a/README.md
+++ b/README.md
@@ -109,8 +109,8 @@
     "number": 100,
   }).Fatal("The ice breaks!")
 
-  # A common pattern is to re-use fields between logging statements by re-using
-  # the logrus.Entry returned from WithFields()
+  // A common pattern is to re-use fields between logging statements by re-using
+  // the logrus.Entry returned from WithFields()
   contextLogger := log.WithFields(log.Fields{
     "common": "this is a common field",
     "other": "I also should be logged always",