Update ISSUE_TEMPLATE.md

.github/ISSUE_TEMPLATE.md

@@ -6,7 +6,7 @@ Create new issues for bugs and feature requests. An issue needs to be actionable
 - [grpc.io mailing list](https://groups.google.com/forum/#!forum/grpc-io)
 - [StackOverflow, with `grpc` tag](http://stackoverflow.com/questions/tagged/grpc)
  
-*Please don't double post your questions in more locations, we are monitoring both channels and the time spent de-duplicating questions can is better spent answering more user questions.*
+*Please don't double post your questions in more locations; we are monitoring both channels, and the time spent de-duplicating questions is better spent answering more user questions.*
  
 ### What version of gRPC and what language are you using?