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

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

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

@@ -105,10 +105,9 @@ struct TextInputExample1 {
 
   build() {
     Column() {
-      TextArea({ placeholder: 'input your word' })
+      TextInput({ placeholder: 'input your word' })
         .placeholderColor("rgb(0,0,225)")
         .placeholderFont({ size: 30, weight: 100, family: 'cursive', style: FontStyle.Italic })
-        .textAlign(TextAlign.Center)
         .caretColor(Color.Blue)
         .height(50)
         .fontSize(30)