update doc

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

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

 # DatePicker
 
 
-> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE：**
+> ![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.
 
 
@@ -25,42 +25,42 @@ DatePicker(value:{start?: Date, end?: Date, selected?: Date, type?: DatePickerTy
 Creates a date picker that allows users to select a date or time within the specified range.
 
 - Parameters
-    | Name | Type | Mandatory | Default Value | Description | 
+    | Name | Type | Mandatory | Default Value | Description |
   | -------- | -------- | -------- | -------- | -------- |
-  | start | Date | No | Date('1970-1-1') | Start date of the date picker. | 
-  | end | Date | No | Date('2100-12-31') | End date of the date picker. | 
-  | selected | Date | No | Current system date or time | Selected date when **type** is set to **DatePickerType.Date** and selected time when **type** is set to **DatePickerType.Time**. | 
-  | type | DatePickerType | No | DatePickerType.Date | Picker type, which can be date picker and time picker. The date picker is used by default. | 
+  | start | Date | No | Date('1970-1-1') | Start date of the date picker. |
+  | end | Date | No | Date('2100-12-31') | End date of the date picker. |
+  | selected | Date | No | Current system date or time | Selected date when **type** is set to **DatePickerType.Date** and selected time when **type** is set to **DatePickerType.Time**. |
+  | type | DatePickerType | No | DatePickerType.Date | Picker type, which can be date picker and time picker. The date picker is used by default. |
 
 - DatePickerType enums
-    | Name | Description | 
+    | Name | Description |
   | -------- | -------- |
-  | Date | Date picker. | 
-  | Time | Time picker. | 
+  | Date | Date picker. |
+  | Time | Time picker. |
 
 
 ## Attributes
 
-  | Name | Type | Default Value | Description | 
+| Name | Type | Default Value | Description |
 | -------- | -------- | -------- |-------- |
-| lunar | boolean | false | Whether&nbsp;to&nbsp;display&nbsp;the&nbsp;lunar&nbsp;calendar.<br/>-&nbsp;**true**:&nbsp;The&nbsp;lunar&nbsp;calendar&nbsp;is&nbsp;displayed.<br/>-&nbsp;**false**:&nbsp;The&nbsp;lunar&nbsp;calendar&nbsp;is&nbsp;not&nbsp;displayed. | 
-| useMilitaryTime | boolean | false | Whether&nbsp;the&nbsp;display&nbsp;time&nbsp;is&nbsp;in&nbsp;24-hour&nbsp;format. | 
+| lunar | boolean | false | Whether&nbsp;to&nbsp;display&nbsp;the&nbsp;lunar&nbsp;calendar.<br/>-&nbsp;**true**:&nbsp;The&nbsp;lunar&nbsp;calendar&nbsp;is&nbsp;displayed.<br/>-&nbsp;**false**:&nbsp;The&nbsp;lunar&nbsp;calendar&nbsp;is&nbsp;not&nbsp;displayed. |
+| useMilitaryTime | boolean | false | Whether&nbsp;the&nbsp;display&nbsp;time&nbsp;is&nbsp;in&nbsp;24-hour&nbsp;format. The value cannot be dynamically modified. |
 
 
 ## Events
 
-  | Name | Description | 
+| Name | Description |
 | -------- | -------- |
-| onChange(callback:&nbsp;(value:&nbsp;DatePickerResult)&nbsp;=&gt;&nbsp;void) | This&nbsp;event&nbsp;is&nbsp;triggered&nbsp;when&nbsp;a&nbsp;date&nbsp;or&nbsp;time&nbsp;is&nbsp;selected. | 
+| onChange(callback:&nbsp;(value:&nbsp;DatePickerResult)&nbsp;=&gt;&nbsp;void) | This&nbsp;event&nbsp;is&nbsp;triggered&nbsp;when&nbsp;a&nbsp;date&nbsp;or&nbsp;time&nbsp;is&nbsp;selected. |
 
 - DatePickerResult object description
-    | Name | Type | Description | 
+    | Name | Type | Description |
   | -------- | -------- | -------- |
-  | year | number | Year&nbsp;of&nbsp;the&nbsp;selected&nbsp;date&nbsp;(when&nbsp;**type**&nbsp;is&nbsp;**DatePickerType.Date**). | 
-  | month | number | Month&nbsp;of&nbsp;the&nbsp;selected&nbsp;date&nbsp;(when&nbsp;**type**&nbsp;is&nbsp;**DatePickerType.Date**). | 
-  | day | number | Date&nbsp;of&nbsp;the&nbsp;selected&nbsp;date&nbsp;(when&nbsp;**type**&nbsp;is&nbsp;**DatePickerType.Date**). | 
-  | hour | number | Hour&nbsp;portion&nbsp;of&nbsp;the&nbsp;selected&nbsp;time&nbsp;(when&nbsp;**type**&nbsp;is&nbsp;**DatePickerType.Time**). | 
-  | minute | number | Minute&nbsp;portion&nbsp;of&nbsp;the&nbsp;selected&nbsp;time&nbsp;(when&nbsp;**type**&nbsp;is&nbsp;**DatePickerType.Time**). | 
+  | year | number | Year&nbsp;of&nbsp;the&nbsp;selected&nbsp;date&nbsp;(when&nbsp;**type**&nbsp;is&nbsp;**DatePickerType.Date**). |
+  | month | number | Month&nbsp;of&nbsp;the&nbsp;selected&nbsp;date&nbsp;(when&nbsp;**type**&nbsp;is&nbsp;**DatePickerType.Date**). |
+  | day | number | Date&nbsp;of&nbsp;the&nbsp;selected&nbsp;date&nbsp;(when&nbsp;**type**&nbsp;is&nbsp;**DatePickerType.Date**). |
+  | hour | number | Hour&nbsp;portion&nbsp;of&nbsp;the&nbsp;selected&nbsp;time&nbsp;(when&nbsp;**type**&nbsp;is&nbsp;**DatePickerType.Time**). |
+  | minute | number | Minute&nbsp;portion&nbsp;of&nbsp;the&nbsp;selected&nbsp;time&nbsp;(when&nbsp;**type**&nbsp;is&nbsp;**DatePickerType.Time**). |
 
 
 ## Example