docs: fix typos (Tencent#741)

Author: RSS1102

tdesign-component/lib/src/components/upload/td_upload.dart

@@ -143,7 +143,7 @@ class TDUpload extends StatefulWidget {
   /// 多图布局时的 runSpacing
   final double? wrapRunSpacing;
 
-  /// 多图对其方式
+  /// 多图对齐方式
   final WrapAlignment? wrapAlignment;
 
   @override

tdesign-site/src/upload/README.md

@@ -179,7 +179,7 @@ import 'package:tdesign_flutter/tdesign_flutter.dart';
 | enabledReplaceType | bool? | false | 是否启用replace功能 |
 | wrapSpacing | double? | - | 多图布局时的 spacing |
 | wrapRunSpacing | double? | - | 多图布局时的 runSpacing |
-| wrapAlignment | WrapAlignment? | - | 多图对其方式 |
+| wrapAlignment | WrapAlignment? | - | 多图对齐方式 |