update zh-cn/application-dev/reference/arkui-ts/ts-basic-components-span.md.

Signed-off-by: LiAn <lian15@huawei.com> 
Signed-off-by: NLiAn <lian15@huawei.com>

zh-cn/application-dev/reference/arkui-ts/ts-basic-components-span.md

@@ -30,7 +30,7 @@ Span(value: string | Resource)
 | ---------- | ---------------------------------------- | -------------- |
 | decoration | {<br/>type:&nbsp;[TextDecorationType](ts-appendix-enums.md#textdecorationtype),<br/>color?:&nbsp;[ResourceColor](ts-types.md#resourcecolor8)<br/>} | 设置文本装饰线样式及其颜色。<br/>默认值：{<br/>type:&nbsp;TextDecorationType.None<br/>color：Color.Black<br/>} |
 | letterSpacing       | number \| string | 设置文本字符间距。                                 |
-| textCase   | [TextCase](ts-appendix-enums.md#textcase枚举说明) | 设置文本大小写。<br/>默认值：Normal |
+| textCase   | [TextCase](ts-appendix-enums.md#textcase) | 设置文本大小写。<br/>默认值：Normal |
 
 
 ## 事件