doctor: fix autocrlf set command.
doctor: fix autocrlf set command.

Fixes Homebrew/homebrew#25282.
muellermartin/dist,mahori/brew,muellermartin/dist,JCount/brew,gordonmcshane/homebrew,maxim-belkin/brew,Homebrew/brew,Linuxbrew/brew,reelsense/brew,JCount/brew,JCount/brew,maxim-belkin/brew,rwhogg/brew,reitermarkus/brew,Homebrew/brew,mahori/brew,reitermarkus/brew,zmwangx/brew,reelsense/brew,alyssais/brew,Linuxbrew/brew,gregory-nisbet/brew,MikeMcQuaid/brew,aw1621107/brew,maxim-belkin/brew,gordonmcshane/homebrew,mgrimes/brew,palxex/brew,pseudocody/brew,amar-laksh/brew_sudo,mgrimes/brew,gregory-nisbet/brew,staticfloat/brew,Homebrew/brew,MikeMcQuaid/brew,konqui/brew,pseudocody/brew,sjackman/homebrew,rwhogg/brew,DomT4/brew,nandub/brew,aw1621107/brew,EricFromCanada/brew,Homebrew/brew,nandub/brew,reelsense/brew,bfontaine/brew,mistydemeo/homebrew,sjackman/homebrew,alyssais/brew,reitermarkus/brew,claui/brew,amar-laksh/brew_sudo,palxex/brew,vitorgalvao/brew,claui/brew,alyssais/brew,mgrimes/brew,claui/brew,hanxue/linuxbrew,aw1621107/brew,tonyg/homebrew,mahori/brew,nandub/brew,amar-laksh/brew_sudo,konqui/brew,EricFromCanada/brew,zmwangx/brew,toonetown/homebrew,mistydemeo/homebrew,nandub/brew,vitorgalvao/brew,DomT4/brew,DomT4/brew,Linuxbrew/brew,AnastasiaSulyagina/brew,claui/brew,toonetown/homebrew,MikeMcQuaid/brew,DomT4/brew,hanxue/linuxbrew,pseudocody/brew,staticfloat/brew,jmsundar/brew,vitorgalvao/brew,EricFromCanada/brew,staticfloat/brew,ilovezfs/brew,muellermartin/dist,MikeMcQuaid/brew,reitermarkus/brew,ilovezfs/brew,jmsundar/brew,bfontaine/brew,AnastasiaSulyagina/brew,hanxue/linuxbrew,gordonmcshane/homebrew,konqui/brew,toonetown/homebrew,rwhogg/brew,jmsundar/brew,mahori/brew,EricFromCanada/brew,Linuxbrew/brew,JCount/brew,sjackman/homebrew,gregory-nisbet/brew,mistydemeo/homebrew,palxex/brew,bfontaine/brew,tonyg/homebrew,tonyg/homebrew,sjackman/homebrew,konqui/brew,zmwangx/brew,vitorgalvao/brew,AnastasiaSulyagina/brew,ilovezfs/brew