!23748 update dual preview streams instruction

Merge pull request !23748 from supeng/master

zh-cn/application-dev/media/dual-channel-preview.md → zh-cn/application-dev/media/camera-dual-channel-preview.md

@@ -11,6 +11,12 @@
 - 暂不支持动态添加流，即不能在没有调用session.stop的情况下，调用addOutput添加流。
 - 对ImageReceiver组件获取到的图像数据处理后，需要将对应的图像Buffer释放，确保Surface的BufferQueue正常轮转。
 
+## 调用流程
+
+双路方案调用流程图建议如下：
+
+![dual-preview-streams-instructions](figures/dual-preview-streams-instructions.png)
+
 ## 开发步骤
 
 1. 导入image接口。

zh-cn/application-dev/media/camera-mode.md

@@ -178,7 +178,7 @@ async function cameraModeCase(context: featureAbility.Context, surfaceId: string
   // 获取支持的美颜类型对应的美颜强度范围
   let beautyRanges: Array<number>;
   try {
-    beautyRanges = portraitSession.getSupportedBeautyRanges(beautyTypes[0]);
+    beautyRanges = portraitSession.getSupportedBeautyRange(beautyTypes[0]);
   } catch (error) {
     let err = error as BusinessError;
     console.error('Failed to get the beauty types ranges. errorCode = ' + err.code);