rubocops/urls: whitelist cspice.
rubocops/urls: whitelist cspice.

As explained in https://github.com/Homebrew/brew/pull/7256#issuecomment-607787949

konqui/brew,EricFromCanada/brew,JCount/brew,sjackman/homebrew,konqui/brew,EricFromCanada/brew,mahori/brew,reitermarkus/brew,mahori/brew,mahori/brew,claui/brew,nandub/brew,EricFromCanada/brew,JCount/brew,nandub/brew,sjackman/homebrew,nandub/brew,mahori/brew,Homebrew/brew,MikeMcQuaid/brew,Homebrew/brew,reitermarkus/brew,konqui/brew,claui/brew,vitorgalvao/brew,nandub/brew,MikeMcQuaid/brew,claui/brew,JCount/brew,vitorgalvao/brew,reitermarkus/brew,claui/brew,MikeMcQuaid/brew,EricFromCanada/brew,MikeMcQuaid/brew,JCount/brew,Homebrew/brew,vitorgalvao/brew,Homebrew/brew,vitorgalvao/brew,konqui/brew,reitermarkus/brew,sjackman/homebrew,sjackman/homebrew