fix import

packages/editor/src/services/codemirror-editor/use-codemirror-editor/use-codemirror-editor.ts

@@ -2,10 +2,10 @@ import { useMemo } from 'react';
 
 import { indentWithTab, defaultKeymap } from '@codemirror/commands';
 import {
-  markdown, markdownLanguage,
+  markdown, markdownLanguage, deleteMarkupBackward,
 } from '@codemirror/lang-markdown';
 import { syntaxHighlighting, HighlightStyle, defaultHighlightStyle } from '@codemirror/language';
-import { languages, deleteMarkupBackward } from '@codemirror/language-data';
+import { languages } from '@codemirror/language-data';
 import {
   EditorState, Prec, type Extension,
 } from '@codemirror/state';