docs: remove extra item show in overview (#2287)

content/start/overview/index.md

@@ -98,5 +98,5 @@ Toast 提示
 
 ```overview
 ConfigProvider 全局配置,
-LocaleProvider 多语言,
+LocaleProvider 多语言
 ```

src/components/ComponentOverview/index.jsx

@@ -2,7 +2,7 @@ import React from 'react';
 import Card from './card';
 
 const ComponentList = props => {
-    const list = props.code.split(',');
+    const list = props.code.split(',').filter(item => item !== '\n');
     return (
         <div className="semi-overview-list" style={{ backgroundColor: `var(--semi-color-bg-0)` }}>
             {list.map((item, index) => (