site: target should be _blank

site/theme/template/Content/EditButton.jsx

@@ -6,7 +6,7 @@ const branchUrl = 'https://github.com/ant-design/ant-design/edit/master/';
 export default function EditButton({ title, filename }) {
   return (
     <Tooltip title={title}>
-      <a className="edit-button" href={`${branchUrl}${filename}`}>
+      <a className="edit-button" href={`${branchUrl}${filename}`} target="_blank">
         <Icon type="edit" />
       </a>
     </Tooltip>

site/theme/template/Layout/Header.jsx

@@ -196,7 +196,12 @@ export default class Header extends React.Component {
           </Link>
         </Menu.Item>
         <Menu.Item key="pro">
-          <a href="http://pro.ant.design" className="header-link">
+          <a
+            href="http://pro.ant.design"
+            className="header-link"
+            target="_blank"
+            rel="noopener noreferrer"
+          >
             <FormattedMessage id="app.header.menu.pro" />
             <span style={{ display: 'inline-block', position: 'relative', top: -2, width: 18 }}>
               <Badge dot />