update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/application-dev/reference/apis/js-apis-file-picker.md

@@ -4,7 +4,7 @@
 >
 > The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
-**Picker** encapsulates system applications, such as **PhotoViewPicker**, **DocumentViewPicker**, and **AudioViewPicker**, and provides capabilities of selecting and saving photos, documents, and audio clips. The application can select the picker as required.
+**Picker** encapsulates system applications, such as **PhotoViewPicker**, **DocumentViewPicker**, and **AudioViewPicker**, and provides capabilities of selecting and saving images, videos, documents, and audio clips. The application can select the picker as required.
 
 ## Modules to Import
 ```js
@@ -394,7 +394,7 @@ async function example() {
       console.error('DocumentViewPicker.save failed with err: ' + err);
     });
   } catch (err) {
-    console.errort('DocumentViewPicker failed with err: ' + err);
+    console.error('DocumentViewPicker failed with err: ' + err);
   }
 }
 ```
@@ -430,7 +430,7 @@ async function example() {
       console.info('DocumentViewPicker.save successfully, DocumentSaveResult uri: ' + JSON.stringify(DocumentSaveResult));
     });
   } catch (err) {
-    console.errort('DocumentViewPicker failed with err: ' + err);
+    console.error('DocumentViewPicker failed with err: ' + err);
   }
 }
 ```
@@ -463,7 +463,7 @@ async function example() {
       console.info('DocumentViewPicker.save successfully, DocumentSaveResult uri: ' + JSON.stringify(DocumentSaveResult));
     });
   } catch (err) {
-    console.errort('DocumentViewPicker failed with err: ' + err);
+    console.error('DocumentViewPicker failed with err: ' + err);
   }
 }
 ```