diff --git a/docs/docs/docs/api/runtime-config.en-US.md b/docs/docs/docs/api/runtime-config.en-US.md
index 1b215766fbc3..7fe7a7954980 100644
--- a/docs/docs/docs/api/runtime-config.en-US.md
+++ b/docs/docs/docs/api/runtime-config.en-US.md
@@ -302,7 +302,19 @@ Modify the root component handed over to react-dom for rendering.
 
 For example, to wrap a Provider around the outside,
 
-```js
+e.g.
+```jsx
+export function rootContainer(container, args) {
+  return (
+    <ThemeProvider>
+      {container}
+    </ThemeProvider>
+  );
+}
+```
+
+e.g.
+```jsx
 export function rootContainer(container, args) {
   return React.createElement(ThemeProvider, null, container);
 }
diff --git a/docs/docs/docs/api/runtime-config.md b/docs/docs/docs/api/runtime-config.md
index 1f64f54b6aca..ae23819ca199 100644
--- a/docs/docs/docs/api/runtime-config.md
+++ b/docs/docs/docs/api/runtime-config.md
@@ -310,7 +310,18 @@ export function render(oldRender) {
 
 比如用于在外面包一个 Provider，
 
-```js
+e.g.
+```jsx
+export function rootContainer(container, args) {
+  return (
+    <ThemeProvider>
+      {container}
+    </ThemeProvider>
+  );
+}
+```
+e.g.
+```jsx
 export function rootContainer(container, args) {
   return React.createElement(ThemeProvider, null, container);
 }