use correct URL in new IPR notification email

 - Legacy-Id: 6858

Author: rpcross

ietf/templates/ipr/new_update_email.txt

@@ -1,6 +1,6 @@
 {% autoescape off %}A new IPR disclosure has been submitted.
 Please check it and post it.
-https://sec.ietf.org/ipr/admin/
+https://datatracker.ietf.org/secr/ipradmin/admin/
 
 {% include "ipr/details.txt" %}
 {% endautoescape %}