Fix tag closable with link, close #1862

components/tag/demo/basic.md

@@ -16,6 +16,6 @@ ReactDOM.render(<div>
   <Tag>标签一</Tag>
   <Tag>标签二</Tag>
   <Tag closable onClose={onClose}>标签三</Tag>
-  <Tag><a href="https://www.alipay.com/" target="_blank">标签四（链接）</a></Tag>
+  <Tag closable><a href="https://www.alipay.com/" target="_blank">标签四（链接）</a></Tag>
 </div>, mountNode);
 ````

components/tag/style/index.less

@@ -29,7 +29,7 @@
 
   &-text {
     a:first-child:last-child {
-      display: block;
+      display: inline-block;
       margin: 0 -8px;
       padding: 0 8px;
     }