Auto merge of #4052 - bundler:excessive-dots, r=segiddins
Auto merge of #4052 - bundler:excessive-dots, r=segiddins

Remove excessive periods from DSL error messages

Apparently, a period is already added when interpolating those messages,
some lines below.

dilumnavanjana/bundler,pivotal-cf-experimental/bundler,Teino1978-Corp/Teino1978-Corp-bundler,mvz/bundler,seanlinsley/bundler,jingweno/bundler,mpapis/bundler,Teino1978-Corp/Teino1978-Corp-bundler,mpapis/bundler,dilumnavanjana/bundler,davydovanton/bundler,RochesterinNYC/bundler,asutoshpalai/bundler,bronzdoc/bundler,seanlinsley/bundler,bundler/bundler,asutoshpalai/bundler,bronzdoc/bundler,bundler/bundler,jingweno/bundler,RochesterinNYC/bundler,pivotal-cf-experimental/bundler,mvz/bundler,davydovanton/bundler