Update info.txt

Author: peacewong

info.txt

@@ -42,7 +42,7 @@ cp -r current.json version-1.6.0.json
  items: [
         {label: 'Next(1.8.0)', to: '/docs/1.7.0/introduction'},
         {label: '1.1.3', to: '/docs/latest/about/introduction'},
-        {label: '1.2.0', to: '/docs/1.2.0/introduction'},
+        {label: '1.6.0', to: '/docs/1.6.0/introduction'},
         {label: '1.1.1', to: '/docs/1.1.1/introduction'},
         {label: '1.1.0', to: '/docs/1.1.0/introduction'},
         {label: '1.0.3', to: '/docs/1.0.3/introduction'},