Typo fixes (#1381)

docs/use/ble.md

@@ -134,7 +134,7 @@ If you want to change this characteristic:
 With Home Assistant, this command is directly available through MQTT auto discovery as a switch into the HASS OpenMQTTGateway device entities list.
 :::
 
-The gateway will publish only the detected sensors like Mi Flora, Mi jia, LYWSD03MMC... and not the other BLE devices. This is usefull if you don't use the gateway for presence detection but only to retrieve sensors data.
+The gateway will publish only the detected sensors like Mi Flora, Mi jia, LYWSD03MMC... and not the other BLE devices. This is useful if you don't use the gateway for presence detection but only to retrieve sensors data.
 
 ## Setting if the gateway use active or passive scanning
 

docs/use/boards.md

@@ -53,7 +53,7 @@ The same behaviour apply to M5StickC and M5StickC Plus
 
 ### Setting the log output
 
-Per default the log of the M5 boards is going to the LCD display with Errors and Warnings only, if you want to change the ouput at build time you can do it in [config_M5.h](https://github.com/1technophile/OpenMQTTGateway/blob/development/main/config_M5.h).
+Per default the log of the M5 boards is going to the LCD display with Errors and Warnings only, if you want to change the output at build time you can do it in [config_M5.h](https://github.com/1technophile/OpenMQTTGateway/blob/development/main/config_M5.h).
 
 You can also change it by MQTT. For example if you want to set to LCD
 
@@ -85,7 +85,7 @@ If you are already in low power mode 1 or 2 with M5Stack you can wake up the boa
 
 ### Setting the log output
 
-Per default the log of the SSD1306 Display boards is going to the LCD display with Errors and Warnings only, if you want to change the ouput at build time you can do it with the compiler directive `-DLOG_LEVEL_LCD=LOG_LEVEL_NOTICE`.
+Per default the log of the SSD1306 Display boards is going to the LCD display with Errors and Warnings only, if you want to change the output at build time you can do it with the compiler directive `-DLOG_LEVEL_LCD=LOG_LEVEL_NOTICE`.
 
 You can also change it by MQTT. For example if you want to set to LCD