two-fer: Update description.md (#1583)
two-fer: Update description.md (#1583)

* Update description.md

I don't think it's great anyways but I'm tired of seeing students submit X as the variable name because of picking up some subliminal hint here.

* Update exercises/two-fer/description.md

Co-Authored-By: Victor Goff <e059ac4c63c41969c1b35067ad605f85695225dc@gmail.com>

Co-authored-by: Victor Goff <e059ac4c63c41969c1b35067ad605f85695225dc@gmail.com>
jmluy/x-common,exercism/x-common,exercism/x-common,jmluy/x-common,petertseng/x-common,petertseng/x-common,jmluy/x-common