polybar: adapt ramp for battery

First and last values are not used.

dotfiles/polybar.conf

@@ -130,17 +130,19 @@ format-full = <label-full>
 label-full = 
 format-low = <animation-low> <label-low>
 format-low-foreground = ${colors.warning}
-label-low = %percentage: 2%% (%time%)
+label-low = %percentage%% (%time%)
 full-at = 99
 low-at = 5
 ramp-capacity-0 = 
-ramp-capacity-1 = 
+ramp-capacity-1 = 
 ramp-capacity-2 = 
-ramp-capacity-3 = 
+ramp-capacity-3 = 
 ramp-capacity-4 = 
-ramp-capacity-5 = 
+ramp-capacity-5 = 
 ramp-capacity-6 = 
-ramp-capacity-7 = 
+ramp-capacity-7 = 
+ramp-capacity-8 = 
+ramp-capacity-9 = 
 animation-low-font = 2
 animation-low-0 = 
 animation-low-1 = 