update battery scale for muse

main/Kconfig.projbuild

@@ -138,7 +138,7 @@ menu "Squeezelite-ESP32"
 		config BAT_CONFIG
 			string
 			default "channel=7,scale=20.24,atten=0" if SQUEEZEAMP
-			default "channel=5,scale=7.48,atten=3,cells=1" if MUSE
+			default "channel=5,scale=7.00,atten=3,cells=1" if MUSE
 			default ""			
 		config TARGET
 			string