optimize code (#5785)

* optimize code

* update

---------

Co-authored-by: lian <imwhatiam123@gmail.com>

frontend/src/components/seafile-codemirror/index.js

@@ -1,6 +1,7 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import CodeMirror from '@uiw/react-codemirror';
+import { EditorView } from "@codemirror/view"
 import { loadLanguage } from '@uiw/codemirror-extensions-langs';
 import { Utils } from '../../utils/utils';
 
@@ -64,6 +65,7 @@ class SeafileCodeMirror extends React.Component {
           {...options}
           onChange={this.onChange}
           basicSetup={DEFAULT_CODEMIRROR_OPTIONS}
+          extensions={[EditorView.lineWrapping]}
         />
       </div>
     );