Fixed nav bar outer loop link

Author: cedricclyburn

supplemental-ui/partials/header-content.hbs

@@ -32,7 +32,7 @@
         <div class="navbar-item has-dropdown is-hoverable">
           <a class="navbar-link" href="#">More Tutorials</a>
           <div class="navbar-dropdown">
-            <a class="navbar-item" href="https://redhat-scholars.github.io/outer-loop-guides/" target="_blank">Outer Loop</a>
+            <a class="navbar-item" href="https://redhat-scholars.github.io/outer-loop-guide/" target="_blank">Outer Loop</a>
             <a class="navbar-item" href="https://redhat-scholars.github.io/openshift-starter-guides/" target="_blank">OpenShift Starter</a>
             <a class="navbar-item" href="https://redhat-scholars.github.io/kubernetes-tutorial/" target="_blank">Kubernetes</a>
             <a class="navbar-item" href="https://redhat-scholars.github.io/istio-tutorial/" target="_blank">Istio</a>