add Accept-Language metadata for sites

Author: Blargian

docusaurus.config.en.js

@@ -237,6 +237,9 @@ const config = {
   themeConfig:
     /** @type {import('@docusaurus/preset-classic').ThemeConfig} */
     ({
+      metadata: [
+        {name: 'Accept-Language', content: 'en-US,en;q=0.9'},
+      ],
       algolia: {
         appId: "5H9UG7CX5W",
         apiKey: "4a7bf25cf3edbef29d78d5e1eecfdca5",

docusaurus.config.jp.js

@@ -202,6 +202,9 @@ const config = {
   themeConfig:
     /** @type {import('@docusaurus/preset-classic').ThemeConfig} */
     ({
+      metadata: [
+        {name: 'Accept-Language', content: 'ja-JP,ja;q=0.9'},
+      ],
       algolia: {
         appId: "5H9UG7CX5W",
         apiKey: "4a7bf25cf3edbef29d78d5e1eecfdca5",

docusaurus.config.ru.js

@@ -204,6 +204,9 @@ const config = {
   themeConfig:
     /** @type {import('@docusaurus/preset-classic').ThemeConfig} */
     ({
+      metadata: [
+        {name: 'Accept-Language', content: 'ru-RU,ru;q=0.9'},
+      ],
       algolia: {
         appId: "5H9UG7CX5W",
         apiKey: "4a7bf25cf3edbef29d78d5e1eecfdca5",

docusaurus.config.zh.js

@@ -202,6 +202,9 @@ const config = {
   themeConfig:
     /** @type {import('@docusaurus/preset-classic').ThemeConfig} */
     ({
+      metadata: [
+        {name: 'Accept-Language', content: 'zh-CN,zh;q=0.9'},
+      ],
       algolia: {
         appId: "5H9UG7CX5W",
         apiKey: "4a7bf25cf3edbef29d78d5e1eecfdca5",