change some description

docs/en/uiflow/advanced.md

@@ -429,7 +429,7 @@ read ADC
 Set conversion channel
 
 * __write value__
-Write da value
+Write DA value
 
 * __beep with freq duration scale__
 Set the buzzer frequency, time and range

docs/index.md

@@ -264,7 +264,7 @@
       "BALA":"Application",
       "Grove-T":"Accessory",
       "CORNER":"Aluminium",
-      "TVOC":"MINI-UNIT"
+      "TVOC/eCO2":"MINI-UNIT"
    };
 
   const mask_btn = `<a href="#" class="quickstart_btn" target='view_window'><button type="button" class="mask-btn1">QuickStart</button></a>`

docs/zh_CN/README.md

@@ -262,7 +262,7 @@
       "BALA":"Application",
       "Grove-T":"Accessory",
       "CORNER":"Aluminium",
-      "TVOC":"MINI-UNIT"
+      "TVOC/eCO2":"MINI-UNIT"
    };
 
   const mask_btn = `<a href="#" class="quickstart_btn" target='view_window'><button type="button" class="mask-btn1">快速上手</button></a>`

docs/zh_CN/uiflow/advanced.md

@@ -420,7 +420,7 @@ wifi重新连接
 设置转换通道
 
 * __write value__
-写入da值
+写入DA值
 
 * __beep with freq duration scale__
 设置蜂鸣器频率，时间和振幅