buoy: Fix lat/lon decimal places.
buoy: Fix lat/lon decimal places.

UKHASnet/UKHASnet_Firmware,sburggsx/UKHASnet_Firmware,dbrooke/UKHASnet_Firmware,dbrooke/UKHASnet_Firmware,sburggsx/UKHASnet_Firmware,UKHASnet/UKHASnet_Firmware