docs(permission_handler_platform_interface): 更新权限文档示例

- 修正 AndroidManifest 文件权限示例的 XML 格式
- 将 angle brackets (&lt; 和 &gt;) 替换为正确的 < 和 >

Author: runoob-coder

permission_handler_platform_interface/lib/src/permissions.dart

@@ -102,8 +102,8 @@ class Permission {
   /// - Devices running Android 13 (API level 33) and above: Should use [Permission.photos].
   ///
   /// EXAMPLE: in Manifest:
-  /// <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="32"/>;
-  /// <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>;
+  /// &lt;uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="32"/&gt;
+  /// &lt;uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/&gt;
   ///
   /// In Flutter to check the status:
   ///