Small grammar fixes
Small grammar fixes

Will backport to 5-1-stable, since the original PR landed there.

[ci skip]

joonyou/rails,yasslab/railsguides.jp,jeremy/rails,gauravtiwari/rails,Edouard-chin/rails,rails/rails,flanger001/rails,gauravtiwari/rails,schuetzm/rails,repinel/rails,baerjam/rails,brchristian/rails,iainbeeston/rails,ledestin/rails,georgeclaghorn/rails,yalab/rails,maicher/rails,lcreid/rails,alecspopa/rails,tgxworld/rails,mohitnatoo/rails,untidy-hair/rails,palkan/rails,yahonda/rails,starknx/rails,eileencodes/rails,betesh/rails,fabianoleittes/rails,illacceptanything/illacceptanything,bogdanvlviv/rails,shioyama/rails,tgxworld/rails,bogdanvlviv/rails,odedniv/rails,eileencodes/rails,tjschuck/rails,ledestin/rails,lucasmazza/rails,eileencodes/rails,repinel/rails,pschambacher/rails,illacceptanything/illacceptanything,MSP-Greg/rails,vipulnsward/rails,yasslab/railsguides.jp,pschambacher/rails,riseshia/railsguides.kr,yhirano55/rails,felipecvo/rails,Envek/rails,untidy-hair/rails,yawboakye/rails,esparta/rails,arunagw/rails,bradleypriest/rails,lcreid/rails,kmcphillips/rails,deraru/rails,mijoharas/rails,BlakeWilliams/rails,joonyou/rails,vipulnsward/rails,starknx/rails,pvalena/rails,rails/rails,kmcphillips/rails,bradleypriest/rails,printercu/rails,betesh/rails,yawboakye/rails,notapatch/rails,esparta/rails,pvalena/rails,riseshia/railsguides.kr,felipecvo/rails,prathamesh-sonpatki/rails,matrinox/rails,gfvcastro/rails,assain/rails,utilum/rails,repinel/rails,Envek/rails,koic/rails,kamipo/rails,yawboakye/rails,mechanicles/rails,kddeisz/rails,Sen-Zhang/rails,kmcphillips/rails,Stellenticket/rails,hanystudy/rails,Envek/rails,rails/rails,palkan/rails,utilum/rails,xlymian/rails,mathieujobin/reduced-rails-for-travis,deraru/rails,fabianoleittes/rails,baerjam/rails,deraru/rails,prathamesh-sonpatki/rails,kirs/rails-1,esparta/rails,xlymian/rails,jeremy/rails,rafaelfranca/omg-rails,Sen-Zhang/rails,yhirano55/rails,maicher/rails,shioyama/rails,yasslab/railsguides.jp,betesh/rails,flanger001/rails,gcourtemanche/rails,palkan/rails,kmayer/rails,illacceptanything/illacceptanything,BlakeWilliams/rails,rossta/rails,riseshia/railsguides.kr,deraru/rails,Edouard-chin/rails,georgeclaghorn/rails,kaspth/rails,Erol/rails,brchristian/rails,rafaelfranca/omg-rails,EmmaB/rails-1,matrinox/rails,illacceptanything/illacceptanything,bradleypriest/rails,Erol/rails,flanger001/rails,mathieujobin/reduced-rails-for-travis,yahonda/rails,ngpestelos/rails,pschambacher/rails,printercu/rails,prathamesh-sonpatki/rails,yasslab/railsguides.jp,Stellenticket/rails,gfvcastro/rails,kamipo/rails,notapatch/rails,gcourtemanche/rails,tjschuck/rails,notapatch/rails,illacceptanything/illacceptanything,lucasmazza/rails,travisofthenorth/rails,ttanimichi/rails,fabianoleittes/rails,illacceptanything/illacceptanything,schuetzm/rails,travisofthenorth/rails,kaspth/rails,MSP-Greg/rails,rafaelfranca/omg-rails,Erol/rails,mohitnatoo/rails,illacceptanything/illacceptanything,tjschuck/rails,kddeisz/rails,rails/rails,mijoharas/rails,Vasfed/rails,vipulnsward/rails,bogdanvlviv/rails,kirs/rails-1,illacceptanything/illacceptanything,palkan/rails,kddeisz/rails,assain/rails,hanystudy/rails,hanystudy/rails,Stellenticket/rails,assain/rails,felipecvo/rails,illacceptanything/illacceptanything,gfvcastro/rails,EmmaB/rails-1,ttanimichi/rails,Sen-Zhang/rails,mechanicles/rails,eileencodes/rails,koic/rails,alecspopa/rails,betesh/rails,pvalena/rails,illacceptanything/illacceptanything,EmmaB/rails-1,notapatch/rails,joonyou/rails,printercu/rails,repinel/rails,fabianoleittes/rails,pvalena/rails,yhirano55/rails,kmayer/rails,kmayer/rails,flanger001/rails,odedniv/rails,shioyama/rails,shioyama/rails,aditya-kapoor/rails,maicher/rails,iainbeeston/rails,ttanimichi/rails,joonyou/rails,utilum/rails,xlymian/rails,aditya-kapoor/rails,BlakeWilliams/rails,ngpestelos/rails,illacceptanything/illacceptanything,tgxworld/rails,esparta/rails,yahonda/rails,BlakeWilliams/rails,Erol/rails,ledestin/rails,kirs/rails-1,georgeclaghorn/rails,MSP-Greg/rails,kddeisz/rails,schuetzm/rails,Vasfed/rails,starknx/rails,bogdanvlviv/rails,Edouard-chin/rails,brchristian/rails,iainbeeston/rails,Envek/rails,mijoharas/rails,mechanicles/rails,jeremy/rails,printercu/rails,mechanicles/rails,mohitnatoo/rails,Edouard-chin/rails,kmcphillips/rails,untidy-hair/rails,lcreid/rails,alecspopa/rails,vipulnsward/rails,odedniv/rails,lucasmazza/rails,MSP-Greg/rails,illacceptanything/illacceptanything,mohitnatoo/rails,baerjam/rails,riseshia/railsguides.kr,travisofthenorth/rails,untidy-hair/rails,yhirano55/rails,yalab/rails,rossta/rails,georgeclaghorn/rails,schuetzm/rails,iainbeeston/rails,Stellenticket/rails,kaspth/rails,ngpestelos/rails,yawboakye/rails,mathieujobin/reduced-rails-for-travis,koic/rails,tjschuck/rails,matrinox/rails,Vasfed/rails,utilum/rails,illacceptanything/illacceptanything,arunagw/rails,lcreid/rails,tgxworld/rails,baerjam/rails,gfvcastro/rails,assain/rails,travisofthenorth/rails,arunagw/rails,Vasfed/rails,jeremy/rails,arunagw/rails,aditya-kapoor/rails,yalab/rails,gauravtiwari/rails,illacceptanything/illacceptanything,yahonda/rails,illacceptanything/illacceptanything,rossta/rails,yalab/rails,prathamesh-sonpatki/rails,kamipo/rails,aditya-kapoor/rails,gcourtemanche/rails