Fix icon on Capella Studio

Change-Id: Ia7c8a0f737a15afeda8f8f3c2e2058451019a322
Signed-off-by: Philippe DUL <philippe.dul@thalesgroup.com>
diff --git a/download.html b/download.html
index de383a2..8b7fab1 100644
--- a/download.html
+++ b/download.html
@@ -235,7 +235,7 @@
                             <div>
                                 <h4 class="txt_white">Resources</h4><br>
            	     				<p><a class="wow fadeInUp animated" data-wow-delay=".6s" href="https://wiki.eclipse.org/Capella/Studio" target="_blank">Documentation <i class="fa fa-external-link" aria-hidden="true"></i></a></p>
-								<p><a class="wow fadeInUp animated" data-wow-delay=".6s" href="https://github.com/eclipse/capella-studio" target="_blank">Source Code <i class="fa fa-external-link" aria-hidden="true"></i></a></p>
+								<p><a class="wow fadeInUp animated" data-wow-delay=".6s" href="https://github.com/eclipse/capella-studio" target="_blank">Source Code <i class="fa fa-github" aria-hidden="true"></i></a></p>
 								<p><a class="wow fadeInUp animated" data-wow-delay=".6s" href="https://download.eclipse.org/capella/capellastudio/products/nightly/?d" target="_blank">Nightly Versions** <i class="fa fa-external-link" aria-hidden="true"></i></a></p>
 								<p><a class="wow fadeInUp animated" data-wow-delay=".6s" href="https://download.eclipse.org/capella/capellastudio/products/release/?d" target="_blank">Previous Versions <i class="fa fa-external-link" aria-hidden="true"></i></a></p>
                             </div>