docs(theme-default): add options for code-group container

Author: meteorlxy

docs/reference/default-theme/config.md

@@ -544,14 +544,21 @@ module.exports = {
 
 #### themePlugins.container
 
-- Type: `{ [name: 'tip' | 'warning' | 'danger' | 'details']: boolean}`
-
-- Default: `{ tip: true, warning: true, danger: true, details: true }`
+- Type: `Record<ContainerType, boolean>`
 
 - Details:
 
   Enable custom blocks that powered by [@vuepress/plugin-container](../plugin/container.md) or not.
 
+  `ContainerType` type is:
+
+  - `tip`
+  - `warning`
+  - `danger`
+  - `details`
+  - `codeGroup`
+  - `codeGroupItem`
+
 - Also see:
   - [Default Theme > Markdown > Custom Blocks](./markdown.md#custom-blocks)
 

docs/zh/reference/default-theme/config.md

@@ -544,14 +544,21 @@ module.exports = {
 
 #### themePlugins.container
 
-- 类型： `{ [name: 'tip' | 'warning' | 'danger' | 'details']: boolean}`
-
-- 默认值： `{ tip: true, warning: true, danger: true, details: true }`
+- 类型： `Record<ContainerType, boolean>`
 
 - 详情：
 
   是否启用由 [@vuepress/plugin-container](../plugin/container.md) 支持的自定义容器。
 
+  `ContainerType` 类型为：
+
+  - `tip`
+  - `warning`
+  - `danger`
+  - `details`
+  - `codeGroup`
+  - `codeGroupItem`
+
 - 参考：
   - [默认主题 > Markdown > 自定义容器](./markdown.md#自定义容器)