Fix GSoC link

Signed-off-by: Michal Čihař <michal@cihar.com>

Author: nijel

pmaweb/templates/contribute.html

@@ -13,7 +13,7 @@ <h2>Contribute to phpMyAdmin</h2>
 
 <h3>An invitation to students</h3>
 <p>
-To gain practical experience in open-source development, you are welcome to contribute to phpMyAdmin. Usually, this is volunteer work, but since 2008, our project has been part of <a href="https://developers.google.com/open-source/gsoc/">Google Summer of Code</a>. This program "offers post-secondary student developers ages 18 and older stipends to write code for various open source software projects". So, <a href="https://wiki.phpmyadmin.net/pma/Category:Google_Summer_of_Code">join us</a> soon and get ready for the next GSoC!
+To gain practical experience in open-source development, you are welcome to contribute to phpMyAdmin. Usually, this is volunteer work, but since 2008, our project has been part of <a href="https://developers.google.com/open-source/gsoc/">Google Summer of Code</a>. This program "offers post-secondary student developers ages 18 and older stipends to write code for various open source software projects". So, <a href="https://github.com/phpmyadmin/phpmyadmin/wiki/GSoC_home">join us</a> soon and get ready for the next GSoC!
 </p>
 
 <h3>Helping users</h3>