docs: add missing comma in i18n.md (#2123)

Author: ilharp

packages/docs/docs/guide/i18n.md

@@ -55,7 +55,7 @@ module.exports = {
         // label for this locale in the language dropdown
         label: 'English',
         // Aria Label for locale in the dropdown
-        ariaLabel: 'Languages'
+        ariaLabel: 'Languages',
         // text for the edit-on-github link
         editLinkText: 'Edit this page on GitHub',
         // config for Service Worker

packages/docs/docs/zh/guide/i18n.md

@@ -52,7 +52,7 @@ module.exports = {
       '/': {
         selectText: 'Languages',
         label: 'English',
-        ariaLabel: 'Languages'
+        ariaLabel: 'Languages',
         editLinkText: 'Edit this page on GitHub',
         serviceWorker: {
           updatePopup: {