manpage: irb command take `--examples` options
manpage: irb command take `--examples` options

Closes Homebrew/homebrew#40985.

Signed-off-by: Dominyk Tiller <53e438f55903875d07efdd98a8aaf887e7208dd3@gmail.com>

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