Update some documentation links

Author: Jamie Snape

core/layouts/layout.phtml

@@ -167,7 +167,7 @@ echo $this->doctype().PHP_EOL;
                     ?>
                 </li>
                 <li>
-                    <a href="http://www.kitware.com/midaswiki/index.php/Main_Page"> <?php echo $this->t('Help'); ?></a>
+                    <a href="https://midas-server.readthedocs.org/"> <?php echo $this->t('Help'); ?></a>
                 </li>
 
                 <?php

core/views/install/index.phtml

@@ -35,8 +35,8 @@
     <div class="separator"></div>
     <h3>Installation</h3>
     This script will guide you during the installation of Midas Platform.<br/><br/>
-    For more information go to:
-    <a href="http://www.kitware.com/midaswiki/index.php/MIDAS3-Installation">http://www.kitware.com/midaswiki/index.php/MIDAS3-Installation</a>
+    For more information go to
+    <a href="https://midas-server.readthedocs.org/en/latest/">Read the Docs</a>.
 
     <h3>System check</h3>
     <?php