Update index.md

mission/index.md

@@ -93,7 +93,7 @@ HIFIS aims to ensure an excellent information environment for outstanding resear
         </p>
         <p>
             For a more extensive list of Helmholtz and international partners, see also our
-            <a href="/review-apps/hifis-hifis-net/11-missionpage/partners.html">partners</a>
+            <a href="../partners.html">partners</a>
             page.
         </p>
     </div>