IMHO, wsconsctl(8) output when setting variable values should be modified

[Andrés Delfino <adelfino_(_at_)_gmail_(_dot_)_com>]

I guess wsconsctl(8) output when setting variable values should be
slightly modified, since mixerctl and sysctl uses: "variable:
old_value -> new_value", and wsconsctl(8) uses: "variable ->
new_value", as you can see below.

$ mixerctl outputs.master=199,199
outputs.master: 199,199 -> 199,199

$ sudo sysctl machdep.userldt=1
machdep.userldt: 1 -> 1

$ wsconsctl keyboard.bell.pitch=50
keyboard.bell.pitch -> 50

Thx, and have a great new year!