change some notice about UART Module

docs/en/module/gps.md

@@ -26,7 +26,7 @@ If you want to Change the uart baudrate,please check here ( [u-center-just-for-W
 
 <img src="assets/img/product_pics/module/module_gps_06.png" width="70%" height="70%">
 
-!> **M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) of GPS module. Therefore, when using the GPS module with the M5Stack Fire, you might have to cut the TXD and RXD from GPS module and wire fly to another set of UART pin, if you gonna use the PSRAM.
+!> **M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) of GPS module. Therefore, when using the GPS module with the M5Stack Fire, you might have to cut the TXD and RXD from GPS module and wire fly to another set of UART pin
 
 ## Product Features
 

docs/en/module/gsm.md

@@ -29,7 +29,7 @@ Power Operation:
 
 *The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation (2G) digital cellular networks used by mobile devices such as mobile phones and tablets.*
 
-!> **M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) of GSM module. Therefore, when using the GSM module with the M5Stack Fire, you might have to cut the TXD and RXD from GSM module and wire fly to another set of UART pin, if you gonna use the PSRAM.
+!> **M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) of GSM module. Therefore, when using the GSM module with the M5Stack Fire, you might have to cut the TXD and RXD from GSM module and wire fly to another set of UART pin
 
 ## Product Features
 Product Feature:

docs/en/module/lorawan.md

@@ -69,7 +69,7 @@ By default, the UART configuration: "9600, 8, n, 1"(8 bits data, no parity, 1 st
 | RXD       | GPIO17    |
 | TXD      | GPIO16     |
 
-**M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) in this module. Therefore, when using the LoRaWAN module with the M5Stack Fire, you might have to cut the TXD and RXD from GPS module and wire fly to another set of UART pin, if you gonna use the PSRAM.
+**M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) in this module. Therefore, when using the LoRaWAN module with the M5Stack Fire, you might have to cut the TXD and RXD from GPS module and wire fly to another set of UART pin
 
 ## Related Link
 

docs/en/module/lte.md

@@ -22,7 +22,7 @@ M8321  is 4V power input, so in the hardware of LTE-4G module, we added a Bidire
 
 *In telecommunication, Long-Term Evolution (LTE) is a standard for wireless broadband communication for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA technologies. It increases the capacity and speed using a different radio interface together with core network improvements.*
 
-!> **M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) of LTE module. Therefore, when using the LTE module with the M5Stack Fire, you might have to cut the TXD and RXD from LTE module and wire fly to another set of UART pin, if you gonna use the PSRAM.
+!> **M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) of LTE module. Therefore, when using the LTE module with the M5Stack Fire, you might have to cut the TXD and RXD from LTE module and wire fly to another set of UART pin
 
 ## Product Features
 Product Feature:

docs/en/module/nb-iot.md

@@ -33,7 +33,7 @@ Power Operation:
 
 *More info about NB-IoT: NarrowBand-Internet of Things (NB-IoT) is a standards-based low power wide area (LPWA) technology developed to enable a wide range of new IoT devices and services. NB-IoT significantly improves the power consumption of user devices, system capacity and spectrum efficiency, especially in deep coverage. Battery life of more than 10 years can be supported for a wide range of use cases.Supported by all major mobile equipment, chipset and module manufacturers, NB-IoT can co-exist with 2G, 3G, and 4G mobile networks. It also benefits from all the security and privacy features of mobile networks, such as support for user identity confidentiality, entity authentication, confidentiality, data integrity, and mobile equipment identification. NB-IoT focuses specifically on indoor coverage, low cost, long battery life, and high connection density. NB-IoT uses a subset of the LTE standard, but limits the bandwidth to a single narrow-band of 200kHz. It uses OFDM modulation for downlink communication and SC-FDMA for uplink communications*
 
-!> **M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) of NB-IoT module. Therefore, when using the NB-IoT module with the M5Stack Fire, you might have to cut the TXD and RXD from NB-IoT module and wire fly to another set of UART pin, if you gonna use the PSRAM.
+!> **M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) of NB-IoT module. Therefore, when using the NB-IoT module with the M5Stack Fire, you might have to cut the TXD and RXD from NB-IoT module and wire fly to another set of UART pin
 
 
 ## Product Features

docs/en/module/sim800.md

@@ -34,6 +34,8 @@ Series Protocol: UART
 - Product Size：54.2mm x 54.2mm x 12.8mm
 - Product weight：16.5g
 
+!> **M5Stack Fire** has occupied GPIO16 / 17 to connect with the PSRAM by default, it's conflict with TXD / RXD (GPIO16, GPIO17) of SIM800L module. Therefore, when using the SIM800L module with the M5Stack Fire, you might have to cut the TXD and RXD from SIM800L module and wire fly to another set of UART pin
+
 ## PinMap
 
 **SIM800**

docs/zh_CN/module/sim800.md

@@ -34,6 +34,9 @@
 - 产品尺寸：54.2mm x 54.2mm x 12.8mm
 - 产品重量：16.5g
 
+
+!>**M5Stack Fire** 中的 GPIO 16 / 17 默认与PSRAM连接，这使得SIM800L模块的TXD / RXD（GPIO16，GPIO17）与其产生冲突.因此，当你使用 M5Stack Fire 去驱动 SIM800L模块时，你需要将 SIM800L 模块的 TXD 与 RXD 切断，然后通过飞线引至另一组 UART 引脚.
+
 ## 管脚映射
 
 *SIM800与M5Core堆叠之后，它们之间通过UART2通信*