Replace Gitlab with Projekte

Replace the title Gitlab with Projekte in the help page

help/index.html

@@ -29,7 +29,7 @@
             <div class="container background_ffffff">
                 <div class="m_bottom_0 p_top_20 p_bottom_20">
                     <div class="col-lg-12">
-                        <h2 class="d-flex flex-column order-1 justify-content-lg-start text-center heading p_top_15"><strong>Gitlab</strong></h2>
+                        <h2 class="d-flex flex-column order-1 justify-content-lg-start text-center heading p_top_15"><strong>Projekte</strong></h2>
                     </div>
                     <div class="col-auto background_ffffff">
                         <ul>