Fix typo

Author: tr

LoRaRF/SX126x.py

@@ -1109,7 +1109,7 @@ def setRfFrequency(self, rfFreq: int) :
     def setPacketType(self, packetType: int) :
         self._writeBytes(0x8A, (packetType,), 1)
 
-    def getPakcetType(self) -> int :
+    def getPacketType(self) -> int :
         buf = self._readBytes(0x11, 2)
         return buf[1]