chore: modify tag story

Author: yangxiaolang

stories/tag/basic.component.ts

@@ -97,7 +97,7 @@ export default class TagBasicComponent {
    * 是否为圆角
    */
   @Input()
-  round = true;
+  round = false;
 
   /**
    * hover是下划线

stories/tag/basic.stories.ts

@@ -27,7 +27,7 @@ export const Basic: Story = {
     size: 'medium',
     closeable: false,
     invalid: false,
-    round: true,
+    round: false,
     allowClick: false,
   },
   parameters: {

stories/tag/tag.mdx

@@ -49,7 +49,7 @@ import * as icon from './icon.stories';
 | size      | ComponentSize | ComponentSize.Medium | 标签大小                                        |
 | color     | string        | -                    | 自定义颜色, `'BORDER_COLOR[,BACKGOUNRD_COLOR]'` |
 | border    | boolean       | false                | 是否添加边框                                    |
-| round     | boolean       | true                 | 是否为圆角                                      |
+| round     | boolean       | false                 | 是否为圆角                                      |
 | closeable | boolean       | false                | 是否可以关闭                                    |
 | solid     | boolean       | false                | 是否为实心                                      |
 | invalid   | boolean       | false                | 是否无效                                        |