Website: Fixed GitHub href

Author: Beelink

docs/index.html

@@ -39,7 +39,7 @@ <h3>Lightweight, versatile desktop image viewer for Windows</h3>
                     <span class="version"></span>
                 </div>
             </a>
-            <a href="#">
+            <a href="https://github.com/ModuleArt/quick-picture-viewer">
                 <div class="button">
                     <img src="imgs/icons/github.png" />
                     <span>GitHub</span>