fix some mistake description

docs/en/core/face_kit.md

@@ -16,6 +16,10 @@ If your up for some classic video games. GameBoy panel plus M5Core is the perfec
 <img src="assets/img/product_pics/core/faces_kit/face_05.jpg">
 
 The other panels are Calculator, Keyboard, Encoder, Joystick, Fingerprint, RFID and QWERTY Keyboard.
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+<mark>To reduce the difficulty of disassembly when removing the replacement panel, it is recommended to remove the M5Core and then disassemble the panel.</mark>
+
+
 ### Calculator Keyboard
 <img src="assets/img/product_pics/core/faces_kit/calculator.png">
 

docs/en/unit/ncir.md

@@ -11,7 +11,7 @@
 **NCIR** featured with built-in infrared sensor **MLX90614**. It can be used to measure the surface temperature of a human body or other object.<br>
 
 Unlike most temperature sensors, this sensor measures infrared light bouncing off of remote objects so it can sense temperature without having to touch them physically. Simply point the sensor towards what you want to measure and it will detect the temperature by absorbing IR waves emitted. Because it doesn't have to touch the object it's measuring, it can sense a wider range of temperatures than most digital sensors! It takes the measurement over an 90-degree field of view so it can be handy for determining the average temperature of an area.<br>
-The MLX90614 is factory calibrated in wide temperature ranges: -40 to 125 ˚C for the ambient temperature and -70 to 382.2 ˚C for the object temperature. T
+The MLX90614 is factory calibrated in wide temperature ranges: -40 to 125 ˚C for the ambient temperature and -70 to 382.2 ˚C for the object temperature. 
 
 Connect with M5Core via GROVE A IIC(0x5A).
 

docs/zh_CN/core/face_kit.md

@@ -19,6 +19,7 @@
 <img src="assets/img/product_pics/core/faces_kit/face_05.jpg">
 
 另外两个面板是计算器键盘和输入全键盘，你可以将它们运用在那些需要输入信息以及复杂控制的应用场景中.
+<mark>拆卸更换面板时，为降低拆卸难度，建议先拆卸M5Core，然后拆解面板.</mark>
 
 ### Calculator Keyboard