perf: document icon and language select (#299)

client/src/components/Layout/navbar.tsx

@@ -9,7 +9,6 @@ import NextLink from 'next/link';
 import Badge from '../Badge';
 import Avatar from '../Avatar';
 import MyIcon from '../Icon';
-import Language from '../Language';
 import { useTranslation } from 'next-i18next';
 import { useGlobalStore } from '@/store/global';
 import MyTooltip from '../MyTooltip';
@@ -167,8 +166,20 @@ const Navbar = ({ unread }: { unread: number }) => {
           </Link>
         </Box>
       )}
-
-      <Language {...itemStyles} />
+      {feConfigs?.show_doc && (
+        <MyTooltip label={t('home.Docs')} placement={'right-end'}>
+          <Box
+            {...itemStyles}
+            mb={0}
+            color={'#9096a5'}
+            onClick={() => {
+              window.open(`https://doc.fastgpt.run/docs/intro`);
+            }}
+          >
+            <MyIcon name={'courseLight'} width={'26px'} height={'26px'} />
+          </Box>
+        </MyTooltip>
+      )}
       {feConfigs?.show_git && (
         <MyTooltip label={`Git Star: ${gitStar}`} placement={'right-end'}>
           <Link