Add new getting-started link

uhepp_org/uhepp_vault/templates/uhepp_vault/base.html

@@ -31,7 +31,7 @@
   <div class="collapse navbar-collapse" id="navbarSupportedContent">
     <ul class="navbar-nav ml-auto">
       <li class="nav-item">
-        <a class="nav-link" href="https://gitlab.cern.ch/fsauerbu/uhepp/-/blob/20-add-documentation/docs/GettingStarted.ipynb">Getting started</a>
+        <a class="nav-link" href="https://uhepp.readthedocs.io/en/latest/GettingStarted.html">Getting started</a>
       </li>
       <li class="nav-item">
           <a class="nav-link" href="{% url 'uhepp_vault:collection-create' %}">New Collection</a>