fix: unresolved conflicts (#1730)

Author: dysuby

src/content/learn/keeping-components-pure.md

@@ -773,13 +773,8 @@ li {
 
 ```js src/StoryTray.js active
 export default function StoryTray({ stories }) {
-<<<<<<< HEAD
   // 复制数组！
-  let storiesToDisplay = stories.slice();
-=======
-  // Copy the array!
   const storiesToDisplay = stories.slice();
->>>>>>> 50d6991ca6652f4bc4c985cf0c0e593864f2cc91
 
   // 不影响原始数组：
   storiesToDisplay.push({