Code review fixes

csharp/protos/unittest_issues.proto

diff --git a/csharp/protos/unittest_issues.proto b/csharp/protos/unittest_issues.proto
index f120516..6c9f763 100644
--- a/csharp/protos/unittest_issues.proto
+++ b/csharp/protos/unittest_issues.proto
@@ -119,7 +119,7 @@
 }
 
 message TestJsonName {
-  // json_name field options are not properly handled during deserialization
+  // Message for testing the effects for of the json_name option
   string name = 1;
   string description = 2 [json_name = "desc"];
   string guid = 3 [json_name = "exid"];