doc: add link to create new issue in lockComment (#279)

Author: trivikr

.github/lock.yml

@@ -16,7 +16,8 @@ lockLabel: false
 # Comment to post before locking. Set to `false` to disable
 lockComment: >
   This thread has been automatically locked since there has not been
-  any recent activity after it was closed. Please open a new issue for
+  any recent activity after it was closed. Please open a 
+  [new issue](https://github.com/aws/aws-sdk-js-v3/issues/new/choose) for
   related bugs and link to relevant comments in this thread.
 
 # Assign `resolved` as the reason for locking. Set to `false` to disable