fix some doc's bug (with v0.57.1) (#3393)

* fix: code blocks's info string
this info string. should be `jsx`

* fix: editor's exec invoke
now, editor.exec() is not available in Slate v0.57.1
so, use editor.insertText() to instead it

*  refactor: delete a nerver used value

* update add new chinese translate
      update chinese translate to `v0.57.1`

Co-authored-by: Ian Storm Taylor <ian@ianstormtaylor.com>

docs/walkthroughs/05-executing-commands.md

@@ -10,7 +10,7 @@ Let's see how this works.
 
 We'll start with our app from earlier:
 
-```js
+```jsx
 const App = () => {
   const editor = useMemo(() => withReact(createEditor()), [])
   const [value, setValue] = useState([
@@ -78,7 +78,7 @@ It has the concept of "code blocks" and "bold formatting". But these things are
 
 We can instead implement these domain-specific concepts by creating custom helper functions:
 
-```js
+```jsx
 // Define our own custom set of helpers.
 const CustomEditor = {
   isBoldMarkActive(editor) {
@@ -172,7 +172,7 @@ const App = () => {
 
 Now our commands are clearly defined and you can invoke them from anywhere we have access to our `editor` object. For example, from hypothetical toolbar buttons:
 
-```js
+```jsx
 const App = () => {
   const editor = useMemo(() => withReact(createEditor()), [])
   const [value, setValue] = useState([