[Tagging] separator for addr:housenumber=*

[fly]

Hey

On the English wiki page [1] "comma" is the proposed separator for
several values of addr:housenumber.

This contradicts our rule of using "semi-colon" as separator of values
and I do not have a clue why.

I propose to deprecate "comma" and use "semi-colon" instead to harmonize
our data structure and allow QA software to find problematic values.

What do you think ?

Cheers fly


[1]
https://wiki.openstreetmap.org/wiki/Addresses#Buildings_with_multiple_house_numbers