Update en.ts

Author: HTHou

docs/src/.vuepress/navbar/en.ts

@@ -48,10 +48,10 @@ export const enNavbar = navbar([
     text: 'ASF',
     children: [
       { text: 'Foundation', target:'_self', link: 'https://www.apache.org/' },
-      { text: 'License', link: 'https://www.apache.org/licenses/' },
+      { text: 'License', target:'_self', link: 'https://www.apache.org/licenses/' },
       { text: 'Security', link: 'https://www.apache.org/security/' },
       { text: 'Sponsorship', link: 'https://www.apache.org/foundation/sponsorship.html' },
-      { text: 'Thanks', link: 'https://www.apache.org/foundation/thanks.html' },
+      { text: 'Thanks', target:'_self', link: 'https://www.apache.org/foundation/thanks.html' },
       { text: 'Current  Events', link: 'https://www.apache.org/events/current-event' },
       { text: 'Privacy', link: 'https://privacy.apache.org/policies/privacy-policy-public.html' },
     ],