Clarify comment in `bundle gem` gemspec
Clarify comment in `bundle gem` gemspec

The comment feels a bit misleading. It sounds like this allows Rubygems
pushes by default which it does not

asutoshpalai/bundler,dilumnavanjana/bundler,asutoshpalai/bundler,RochesterinNYC/bundler,seanlinsley/bundler,RochesterinNYC/bundler,mvz/bundler,seanlinsley/bundler,dilumnavanjana/bundler,bundler/bundler,bronzdoc/bundler,bronzdoc/bundler,bundler/bundler,mvz/bundler