Capitalize descriptions of --HEAD, --devel
Capitalize descriptions of --HEAD, --devel

Closes Homebrew/homebrew#35027.

Signed-off-by: Jack Nagel <43386ce32af96f5c56f2a88e458cb94cebee3751@gmail.com>

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