Update _comment.html.erb (#2387)

app/views/notes/_comment.html.erb

@@ -69,6 +69,9 @@
       <p class="alert alert-info">Is this a question? <a href="/questions/new?title=<%= comment.body %>">Click here</a> to post it to the <a href="/questions">Questions page</a>.
       </p>
     <% end %>
++   <% if comment.parent.has_power_tag('activity') && current_user && current_user.id == comment.uid %>
++      <div class="alert alert-info">Have you attempted or completed this activity? Consider <a href="/post?n=15798&tags=replication:<%= comment.nid %>,<%= comment.parent.tagnames.join(',') %>">sharing how it went</a> to help refine and improve it.</div>
++    <% end %>
   </div>
 
   <% if current_user %>