test-bot: fix tap directory name variable.
test-bot: fix tap directory name variable.

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