tests: explain Homebrew version checking in tabs
tests: explain Homebrew version checking in tabs

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