Make font updater commands from setupbase.py update the icon totals in the docs

[darkvertex]

This keeps catching me whenever I make an update of a font version.

It can be done easily'ish with a precise regex replace after the rest of the font update succeeds. It's not terribly important but would be nice if it did it automatically.

(I may tackle this myself when I have some time. Just wanted to log the enhancement.)