Update CPD complaint link (#1136)

Author: michplunkett

OpenOversight/app/templates/complaint.html

@@ -22,7 +22,7 @@ <h3>
             Warning! <small>The following link will open an external site
           in a new browser tab:</small>
         </h3>
-        <a href="https://ipraportal.iprachicago.org/pls/htmldb/f?p=1503:12:2709570244836141"
+        <a href="https://www.chicagocopa.org/complaints/"
            target="_blank"
            class="btn btn-info btn-lrg">File Complaint Online</a>
       </div>