[SX126x] Fixed debug print format

src/modules/SX126x/SX126x.cpp

@@ -631,7 +631,7 @@ int16_t SX126x::startReceiveDutyCycleAuto(uint16_t senderPreambleLength, uint16_
 
   uint32_t symbolLength = ((uint32_t)(10 * 1000) << this->spreadingFactor) / (10 * this->bandwidthKhz);
   uint32_t sleepPeriod = symbolLength * sleepSymbols;
-  RADIOLIB_DEBUG_PRINTLN("Auto sleep period: %d", sleepPeriod);
+  RADIOLIB_DEBUG_PRINTLN("Auto sleep period: %lu", sleepPeriod);
 
   // when the unit detects a preamble, it starts a timer that will timeout if it doesn't receive a header in time.
   // the duration is sleepPeriod + 2 * wakePeriod.