docs: mention DxCore as library dependency

Author: M68426

library.properties

@@ -3,7 +3,7 @@ version=1.2.1
 author=Microchip Technology Inc. <simen.gangstad@microchip.com>
 maintainer=Microchip Technology Inc. <simen.gangstad@microchip.com>
 sentence=Library for the AVR-IoT Cellular Mini Board
-paragraph=Supports HTTP(S), MQTT(S), Low Power and more. Dependent on AVR-IoT MCP9808 and AVR-IoT VEML3328
+paragraph=Supports HTTP(S), MQTT(S), Low Power and more. Dependent on AVR-IoT MCP9808, AVR-IoT VEML3328 and DxCore
 category=Communication
 url=https://iot.microchip.com/docs
 architectures=*