footer: Fix broken D2 link

app/views/common/footer.scala.html

@@ -1,25 +1,11 @@
 @**
- * Yobi, Project Hosting SW
- *
- * Copyright 2014 NAVER Corp.
- * http://yobi.io
- *
- * @author Deokhong Kim
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- **@
+* Yona, 21st Century Project Hosting SW
+*
+* Copyright Yona & Yobi Authors & NAVER Corp.
+* https://yona.io
+**@
 <footer class="page-footer-outer">
     <div class="page-footer">
-        <span class="provider">Copyright <a href="https://github.com/yona-projects/yona/blob/master/AUTHORS" target="_blank" class="yona-author">Yona authors</a> & © <a href="http://navercorp.com/" target="_blank">NAVER Corp.</a> Supported by <a href="https://developers.naver.com/d2/" target="_blank" class="d2-program"><span class="d2">D2</span><span class="program"> Program</span></a></span>
+        <span class="provider">Copyright <a href="https://github.com/yona-projects/yona/blob/master/AUTHORS" target="_blank" class="yona-author">Yona authors</a> & © <a href="http://navercorp.com/" target="_blank">NAVER Corp.</a> Supported by <a href="http://d2.naver.com" target="_blank" class="d2-program"><span class="d2">D2</span><span class="program"> Program</span></a></span>
     </div>
 </footer>