docs: add

Author: xiaoyatong

src/sites/sites-react/doc/docs/react/migrate-from-v2.en-US.md

@@ -260,7 +260,12 @@ If your project uses these components, please read the documentation carefully a
 
 [//]: # '#### ImagePreview'
 [//]: # '#### NoticeBar'
-[//]: # '#### Popover'
+
+#### Popover
+
+- Deprecated style variables that existed in the documentation have been removed, `--nutui-popover-hover-background-color`、`--nutui-popover-hover-text-color`、`--nutui-popover-border-color`
+- Changed style variable, `--nutui-popover-menu-item-padding` -> `--nutui-popover-padding`，`--nutui-popover-menu-item-width` -> `--nutui-popover-item-width`
+- Revised the data type for `location` to use a unified position type `FullPosition`
 
 #### Price
 

src/sites/sites-react/doc/docs/react/migrate-from-v2.md

@@ -271,7 +271,12 @@ plugins: [
 
 [//]: # '#### ImagePreview'
 [//]: # '#### NoticeBar'
-[//]: # '#### Popover'
+
+#### Popover
+
+- 废弃的样式变量，这些变量存在于文档，已删除：`--nutui-popover-hover-background-color`、`--nutui-popover-hover-text-color`、`--nutui-popover-border-color`
+- 变更样式变量 `--nutui-popover-menu-item-padding` 变更为 `--nutui-popover-padding`，`--nutui-popover-menu-item-width` 变更为 `--nutui-popover-item-width`
+- 修订 `location` 的数据类型，使用统一位置类型 `FullPosition`
 
 #### Price
 

src/sites/sites-react/doc/docs/taro/migrate-from-v2.en-US.md

@@ -260,7 +260,12 @@ If your project uses these components, please read the documentation carefully a
 
 [//]: # '#### ImagePreview'
 [//]: # '#### NoticeBar'
-[//]: # '#### Popover'
+
+#### Popover
+
+- Deprecated style variables that existed in the documentation have been removed, `--nutui-popover-hover-background-color`、`--nutui-popover-hover-text-color`、`--nutui-popover-border-color`
+- Changed style variable, `--nutui-popover-menu-item-padding` -> `--nutui-popover-padding`，`--nutui-popover-menu-item-width` -> `--nutui-popover-item-width`
+- Revised the data type for `location` to use a unified position type `FullPosition`
 
 #### Price
 

src/sites/sites-react/doc/docs/taro/migrate-from-v2.md

@@ -274,7 +274,12 @@ plugins: [
 
 [//]: # '#### ImagePreview'
 [//]: # '#### NoticeBar'
-[//]: # '#### Popover'
+
+#### Popover
+
+- 废弃的样式变量，这些变量存在于文档，已删除：`--nutui-popover-hover-background-color`、`--nutui-popover-hover-text-color`、`--nutui-popover-border-color`
+- 变更样式变量 `--nutui-popover-menu-item-padding` 变更为 `--nutui-popover-padding`，`--nutui-popover-menu-item-width` 变更为 `--nutui-popover-item-width`
+- 修订 `location` 的数据类型，使用统一位置类型 `FullPosition`
 
 #### Price