Add link to changes

Signed-off-by: Nick Slowinski <nick@nick-slowinski.de>

docusaurus.config.ts

@@ -116,6 +116,7 @@ const config: Config = {
           position: 'left',
           label: 'Informationen',
         },
+        {to: '/änderungen', label: 'Änderungen', position: 'right'},
       ],
     },
     footer: {