Fix all deployment link

Author: Etienne Tremel

_includes/header.html

@@ -1,11 +1,11 @@
 <div class="header clearfix">
-<div class="header-home"><a href="{{site.main_url_prefix}}/">Sock Shop</a></div>
+<div class="header-home"><a href="/">Sock Shop</a></div>
 <nav>
   <ul class="nav header-nav">
     <li class="{% if include.quickstart %}active{% endif %}"><a href="/docs/quickstart.html">Quickstart</a></li>
     <li class="{% if include.docs %}active{% endif %}"><a href="/docs/index.html">Docs</a></li>
     <li class="{% if include.api %}active{% endif %}"><a href="/api/index.html">API</a></li>
-    <li><a href="http://github.com/microservices-demo" target="_blank">GitHub</a></li>
+    <li><a href="https://github.com/microservices-demo" target="_blank">GitHub</a></li>
   </ul>
 </nav>
 </div>

assets/css/custom.scss

@@ -60,7 +60,7 @@ code.highlighter-rouge {
   font-weight: bold;
   margin: 0.3em 0 0;
   padding: 0 0 0 30px;
-  background-image: url({{ site.deploy_doc_url_prefix }}/assets/img/weaveworks-logo.png);
+  background-image: url(/assets/img/weaveworks-logo.png);
   background-repeat: no-repeat;
   background-position-y: 0.3em;
   background-size: 1em 1em;
@@ -95,7 +95,7 @@ code.highlighter-rouge {
 }
 
 .hero-banner {
-  background: url(../img/hero_socks.png);
+  background: url(/assets/img/hero_socks.png);
   margin: 0 0 2em;
 }