Clarify log statemeny

Author: dearmash

adafruit_esp32spi/adafruit_esp32spi.py

@@ -721,7 +721,7 @@ def socket_write(self, socket_num, buffer, conn_mode=TCP_MODE):
             # UDP needs to finalize with this command, does the actual sending
             resp = self._send_command_get_response(_SEND_UDP_DATA_CMD, self._socknum_ll)
             if resp[0][0] != 1:
-                raise RuntimeError("Failed to send data")
+                raise RuntimeError("Failed to send UDP data")
             return
 
         if sent != len(buffer):