This is actually awesome and thank you so very much!
I’ve been playing with the fixed version for the last hour, and I can have proper numerals in Russian now — wow! I thought it wasn’t possible at all 
Russian numerals are funny. We have 3 forms for the nouns:
1 минута (minute) — singular
2 минуты — plural/few, for 2, 3 or 4
5 минут — plural/many, for 5–20
which wouldn’t be so bad, but here comes the fun:
21, 31, 41, 161, etc. requires singular
22, 34, 53, 12562, etc requires plural/few
11–19, as well as 111, 412, 24215, etc requires plural/many
and that last rule usually makes people give up and let it go. It’s awesome to see go-i18n handling all that properly and hugo making good use of that.