Fix: Fix URL to the manual in the menu

Don't hardcode the link to the menu instead use the new useManualURL
hook to derive the link from the GSA settings and the users locale.

src/web/components/menu/menu.jsx

@@ -20,12 +20,14 @@ import {useMatch} from 'react-router-dom';
 import Link from 'web/components/link/link';
 import useCapabilities from 'web/hooks/useCapabilities';
 import useGmp from 'web/hooks/useGmp';
+import useManualURL from 'web/hooks/useManualURL';
 import useTranslation from 'web/hooks/useTranslation';
 
 const Menu = () => {
   const [_] = useTranslation();
   const capabilities = useCapabilities();
   const gmp = useGmp();
+  const manualURL = useManualURL();
 
   function checkCapabilities(capabilitiesList) {
     return capabilitiesList.reduce(
@@ -355,7 +357,7 @@ const Menu = () => {
         subNav: [
           {
             label: _('User Manual'),
-            to: 'https://docs.greenbone.net/GSM-Manual/gos-22.04/en/',
+            to: manualURL,
             isExternal: true,
           },
           {