update atomecho

docs/en/atom/atomecho.md

@@ -8,7 +8,7 @@
 
 **ATOM ECHO**is a Bluetooth speaker designed based on ATOM. Its volume is very small, only 24 * 24 * 17 mm. Music can be played by bluetooth of ESP32 with mobile phones and tablets. Of course, you can access AWS, Baidu and other cloud platforms by writing code, and use built-in microphone and speaker for voice interaction, so that ATOM ECHO has certain AI capabilities, realizing voice control, story telling, Internet of things and other functions. The speaker is embedded with an RGB LED (SK6812), which can visually display the connection status. In addition to being used as a Bluetooth speaker, it still has the control ability of atom series. You can connect devices through the grove interface, G21 / G25 can only be used for general I/O, they do not support I2C and UART.Screw hole on the back is convenient for users to fix.
 
->? **Note: the product can not be used for a long time. It is recommended to play music for about 1 hour. It is not allowed to play low-frequency and heavy music, otherwise the speaker will be damaged.**
+?> **Note: the product can not be used for a long time. It is recommended to play music for about 1 hour. It is not allowed to play low-frequency and heavy music, otherwise the speaker will be damaged.**
 
 ## Product Features
 

docs/zh_CN/atom/atomecho.md

@@ -8,7 +8,7 @@
 
 **ATOM ECHO**是一款基于ATOM设计的蓝牙音箱，它的体积非常小巧，只有24*24*17毫米，通过ESP32自带的蓝牙功能与手机、平板等进行连接即可播放音乐。当然，你可以通过编写代码接入AWS、百度等云平台，使用内置麦克风和扬声器进行语音交互，使得ATOM ECHO具备一定的AI能力，实现语音控制、讲故事、物联网等功能。音箱内嵌一颗RGB LED（SK6812)，可以直观的显示连接状态。除了可以作为蓝牙音箱使用外，它依然具备了ATOM系列的控制能力，你可以通过GROVE接口连接外部设备，G21/G25仅能用于通用IO，不支持UART与I2C。其背面有一个M2螺丝孔，方便用户进行固定。
 
->? **注意：产品不可长时间使用，音乐播放建议在1小时左右，不可播放低频过重的音乐，否则将损坏扬声器。**
+?> **注意：产品不可长时间使用，音乐播放建议在1小时左右，不可播放低频过重的音乐，否则将损坏扬声器。**
 
 ## 产品特性
 
@@ -83,7 +83,7 @@
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->? G19/G22/G23/G33已经被定义，请勿将以上引脚复用，否则将导致ATOM ECHO损坏。
+> G19/G22/G23/G33已经被定义，请勿将以上引脚复用，否则将导致ATOM ECHO损坏。
 
 ## EasyLoader