add ref to website repo

Author: fabian-thomas

layouts/partials/footer.html

@@ -23,10 +23,10 @@
         </div>
       </div>
     </div>
-    <p style="text-align: center; color: gray;">Want to contribute to such research? <a href="https://career.cispa.de/phd.html">CISPA is constantly looking for PhD students</a></p>
-    <p id="footerbottom" style="color: gray;">
-      {{ .Site.Copyright }} - Last Update: {{ time.Now | time.Format
-      "2006-01-02" }}
+    <p style="text-align: center; color: gray;">
+      Want to contribute to such research? <a href="https://career.cispa.de/phd.html">CISPA is constantly looking for PhD students</a><br><br>
+      Last Update: {{ time.Now | time.Format "2006-01-02" }}, <a href="https://github.com/ghostwriteattack/ghostwriteattack.github.io">Changelog and website repository</a><br><br>
+      {{ .Site.Copyright }}
     </p>
   </div>
 </footer>