On request from a user, added information about running idnits before submission upload to the upload form page.

 - Legacy-Id: 13762

Author: levkowetz

ietf/templates/submit/upload_submission.html

@@ -35,8 +35,14 @@
       using this and the following pages, you may alternatively submit
       your draft by email to
       <a href="mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>.
-      However, be advised that manual processing always takes additional time.</p>
+      However, be advised that manual processing always takes additional time.
+    </p>
 
+    <p>
+      Before you submit your draft, it is recommended that you check it for nits
+      using the <b><a href="https://tools.ietf.org/tools/idnits/">idnits tool</></b>.
+    </p>
+    
     {% include "submit/problem-reports-footer.html" %}
 
       <h2>Upload an Internet-Draft</h2>