Update db-ux-design-system.html

Author: mfranzke

db-ux-design-system.html

@@ -9,7 +9,7 @@
       name="description"
       content="Overview regarding the technical components out of the DB UX Design System by Deutsche Bahn."
     />
-    <title>DB UI</title>
+    <title>DB UX Design System</title>
     <link rel="stylesheet" href="styles/db-ui-42.css" />
     <link rel="stylesheet" href="styles/styles.css" />
     <link rel="stylesheet" href="styles/all-colors.css" />