URL fixes

Author: namedgraph

linkeddatahub/docs/user-guide/create-data/create-documents/index.html

@@ -139,7 +139,7 @@ <h1>Create documents</h1>
                      <iframe allowfullscreen="allowfullscreen" frameborder="0" height="315" src="https://www.youtube.com/embed/paetjTkFBxE" width="560"></iframe>
                      </p>
 
-                  <p>To create a container document (which can have <a href="../../../reference/user-interface/documents/#hierarchy" target="_blank">children documents</a>) with a custom URL, follow these steps:</p>
+                  <p>To create a container document (which can have <a href="../../../reference/data-model/documents/#hierarchy" target="_blank">children documents</a>) with a custom URL, follow these steps:</p>
 
                   <div class="tabbable">
 
@@ -206,7 +206,7 @@ <h1>Create documents</h1>
 
                   <p>A container titled <samp>Concepts</samp> should appear with the URI <a href="https://localhost:4443/concepts/" target="_blank">https://localhost:4443/concepts/</a>.</p>
 
-                  <p class="lead"><a href="../../../reference/user-interface/documents/" target="_blank">Read more about document management.</a></p>
+                  <p class="lead"><a href="../../../reference/data-model/documents/" target="_blank">Read more about document management.</a></p>
                   </div>
                <nav></nav>
             </main>

linkeddatahub/docs/user-guide/navigate-data/index.html

@@ -143,7 +143,7 @@ <h1>Navigate data</h1>
 
                      <h2 id="document-tree">Document tree</h2>
 
-                     <p>Document tree is a widget that enables quick overview of the application's <a href="../../reference/user-interface/documents/#hierarchy">document hierarchy</a>. Each document is shown as a node in the tree; container documents
+                     <p>Document tree is a widget that enables quick overview of the application's <a href="../../reference/data-model/documents/#hierarchy">document hierarchy</a>. Each document is shown as a node in the tree; container documents
                         can be expanded to reveal the children documents.</p>
 
                      <p>The widget can be accessed by sliding the mouse to the left edge of the screen (on