update for device Descriptors ,focus type and Sample format

Signed-off-by: Njiao_yanlin <jiaoyanlin@huawei.com>

zh-cn/application-dev/media/stream-manager.md

-## 开发指导
-1. 获取流管理器。
-
-    const audioStreamManager = audio.getStreamManager();
-    
-2. 获取当前音频渲染器流信息。
-
-```
-audioStreamManager.getCurrentAudioRendererInfoArray(async (err, AudioRendererChangeInfoArray) => {
-    console.info('[GET_RENDERER_STATE_1_CALLBACK] **** Get Callback Called ****');
-    if (err) {
-        console.log('getCurrentAudioRendererInfoArray :ERROR: '+err.message);
-        resultFlag = false;
-    }
-    else {
-        if (AudioRendererChangeInfoArray !=null) {
-            for (let i=0;i<AudioRendererChangeInfoArray.length;i++) {
-                AudioRendererChangeInfo = AudioRendererChangeInfoArray[i];
-                console.info('StreamId for '+i+' is:'+AudioRendererChangeInfo.streamId);
-                console.info('ClientUid for '+i+' is:'+AudioRendererChangeInfo.clientUid);
-                console.info('Content '+i+' is:'+AudioRendererChangeInfo.rendererInfo.content);
-                console.info('Stream'+i+' is:'+AudioRendererChangeInfo.rendererInfo.usage);
-                console.info('Flag'+i+' is:'+AudioRendererChangeInfo.rendererInfo.rendererFlags); 
-                console.info('State for '+i+' is:'+AudioRendererChangeInfo.rendererState);
-
-                var devDescriptor = AudioRendererChangeInfo.deviceDescriptors;
-                for (let j=0;j<AudioRendererChangeInfo.deviceDescriptors.length; j++) {
-                    console.info('Id:'+i+':'+AudioRendererChangeInfo.deviceDescriptors[j].id);
-                    console.info('Type:'+i+':'+AudioRendererChangeInfo.deviceDescriptors[j].deviceType);
-                    console.info('Role:'+i+':'+AudioRendererChangeInfo.deviceDescriptors[j].deviceRole);
-                    console.info('Name:'+i+':'+AudioRendererChangeInfo.deviceDescriptors[j].name);
-                    console.info('Address:'+i+':'+AudioRendererChangeInfo.deviceDescriptors[j].address);
-                    console.info('SampleRates:'+i+':'+AudioRendererChangeInfo.deviceDescriptors[j].sampleRates[0]);
-                    console.info('ChannelCount'+i+':'+AudioRendererChangeInfo.deviceDescriptors[j].channelCounts[0]);
-                    console.info('ChannelMask:'+i+':'+AudioRendererChangeInfo.deviceDescriptors[j].channelMasks);
-                }
-            }
-        }
-    }
-});
-```
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