Merge branch 'feature/wufan/20210713/refactore-placeholder' into dev

src/modules/teach-tool/components/CourseCategoryManage.jsx

@@ -545,9 +545,9 @@ class CourseCategoryManage extends Component {
         )}
         <div className='box'>
           <div className='search-condition'>
-            <span className='search-label'>搜索分类名称：</span>
+            <span className='search-label'>搜索名称：</span>
             <Search
-              placeholder='请输入名称'
+              placeholder='搜索分类名称'
               style={{ width: '300px' }}
               onSearch={(value) => this.queryCategoryTree('init', value)}
               className='search-input'