Revert "doctor: use double quotes for setting PATH."
Revert "doctor: use double quotes for setting PATH."

I'm an idiot.

This reverts commit f890e4973840a66a522189c8e5530bff61d17162.

MikeMcQuaid/brew,mahori/brew,Homebrew/brew,maxim-belkin/brew,sjackman/homebrew,amar-laksh/brew_sudo,reelsense/brew,palxex/brew,zmwangx/brew,amar-laksh/brew_sudo,muellermartin/dist,Linuxbrew/brew,mistydemeo/homebrew,konqui/brew,bfontaine/brew,maxim-belkin/brew,staticfloat/brew,EricFromCanada/brew,zmwangx/brew,EricFromCanada/brew,pseudocody/brew,ilovezfs/brew,muellermartin/dist,toonetown/homebrew,mgrimes/brew,reitermarkus/brew,EricFromCanada/brew,aw1621107/brew,AnastasiaSulyagina/brew,toonetown/homebrew,JCount/brew,mgrimes/brew,gregory-nisbet/brew,toonetown/homebrew,staticfloat/brew,Homebrew/brew,palxex/brew,hanxue/linuxbrew,vitorgalvao/brew,sjackman/homebrew,claui/brew,DomT4/brew,muellermartin/dist,mahori/brew,DomT4/brew,bfontaine/brew,aw1621107/brew,konqui/brew,JCount/brew,zmwangx/brew,MikeMcQuaid/brew,reelsense/brew,jmsundar/brew,aw1621107/brew,Homebrew/brew,EricFromCanada/brew,Homebrew/brew,claui/brew,sjackman/homebrew,mistydemeo/homebrew,tonyg/homebrew,gordonmcshane/homebrew,mahori/brew,maxim-belkin/brew,hanxue/linuxbrew,jmsundar/brew,pseudocody/brew,mgrimes/brew,reitermarkus/brew,gordonmcshane/homebrew,DomT4/brew,alyssais/brew,ilovezfs/brew,mistydemeo/homebrew,AnastasiaSulyagina/brew,jmsundar/brew,gordonmcshane/homebrew,nandub/brew,JCount/brew,gregory-nisbet/brew,Linuxbrew/brew,rwhogg/brew,hanxue/linuxbrew,nandub/brew,mahori/brew,Linuxbrew/brew,amar-laksh/brew_sudo,alyssais/brew,AnastasiaSulyagina/brew,reitermarkus/brew,palxex/brew,tonyg/homebrew,pseudocody/brew,bfontaine/brew,sjackman/homebrew,JCount/brew,claui/brew,DomT4/brew,rwhogg/brew,nandub/brew,MikeMcQuaid/brew,vitorgalvao/brew,konqui/brew,nandub/brew,claui/brew,MikeMcQuaid/brew,vitorgalvao/brew,tonyg/homebrew,gregory-nisbet/brew,rwhogg/brew,konqui/brew,ilovezfs/brew,vitorgalvao/brew,staticfloat/brew,alyssais/brew,Linuxbrew/brew,reelsense/brew,reitermarkus/brew