Update initial.html

frontend/src/main/resources/initial.html

@@ -6,7 +6,7 @@ <h2>Welcome to the administration interface of UnifiedViews - ETL tool for RDF d
 	<p>The tool uses data processing pipelines for obtaining, processing, and storing RDF data;<br/>
 	makes data processing highly customizable by allowing to use custom plugins -- data processing units (DPUs) -- on the pipelines;<br/>
 	provides monitoring, debugging, and scheduling of ETL tasks.<br/>
-	<p>For more information, please visit the <a href="https://grips.semantic-web.at/display/UDDOC/Introduction"> UnifiedViews</a> documentation.</p>
+	<p>For more information, please visit the <a href="http://unifiedviews.eu"> UnifiedViews</a> documentation.</p>
 	<p>Version: ${project.version}</p>
 </body>
 </html>