update docs

Signed-off-by: Nester.zhou <ester.zhou@huawei.com>

en/application-dev/reference/arkui-ts/ts-basic-components-checkbox.md

 # Checkbox
 
-> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**
-> This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.
-
-
 The **\<Checkbox>** component is used to enable or disable an option.
 
+> **NOTE**
+>
+> This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.
+
 ## Required Permissions
 
 None
 
 ## Child Components
 
-None
+Not supported
 
 ## APIs
 
@@ -30,7 +30,7 @@ Checkbox( name?: string,  group?: string )
 
 | Name         | Type| Default Value| Description|
 | ------------- | ------- | ------ | -------- |
-| select        | bool   | false | Whether the check box is selected.|
+| select        | boolean   | false | Whether the check box is selected.|
 | selectedColor | Color | - | Color of the check box when it is selected.|
 
 ## Events
@@ -41,7 +41,8 @@ Checkbox( name?: string,  group?: string )
 
 ## Example
 
-```
+```ts
+// xxx.ets
 @Entry
 @Component
 struct CheckboxExample {

en/application-dev/reference/arkui-ts/ts-basic-components-checkboxgroup.md

 # CheckboxGroup
 
-> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**
-> This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.
-
 The **\<CheckboxGroup>** component is used to select or deselect all check boxes in a group.
 
+> **NOTE**
+>
+> This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.
+
 ## Required Permissions
 
 None
 
 ## Child Components
 
-None
+Not supported
 
 ## APIs
 
@@ -29,7 +30,7 @@ Creates a check box group so that you can select or deselect all check boxes in
 
 | Name| Type| Default Value| Description|
 | -------- | -------- | -------- | -------- |
-| selectAll | bool | false | Whether to select all.| 
+| selectAll | boolean | false | Whether to select all.|
 | selectedColor | Color | - | Color of the selected check box.|
 
 ## Events
@@ -48,7 +49,8 @@ Creates a check box group so that you can select or deselect all check boxes in
 
 ## Example
 
-```
+```ts
+// xxx.ets
 @Entry
 @Component
 struct CheckboxExample {