renamed material name to product name, removed headings

src/app/documentation/documentation-architecture/documentation-architecture.component.html

@@ -1,4 +1,3 @@
-<h4>Architecture</h4>
 
 <img src="/assets/imgs/architecture.svg" alt="architecture" class="space-below">
 

src/app/documentation/documentation-database/documentation-database.component.html

@@ -1,4 +1,3 @@
-<h2>Database</h2>
 
 <p>
   The used database instance is a MongoDB instance running on the BIC, storing all application data. The admin database

src/app/documentation/documentation.component.html

@@ -1,4 +1,3 @@
-<h2>Documentation</h2>
 
 <p>
   <a [href]="api.hostName + '/static/intro-presentation/index.html'">