ytcc: fix checkPhase
ytcc: fix checkPhase

Fixes:

    ERROR: Wrong expression passed to '-k': not get_channels \
                 and not play_video \
                 and not download_videos \
                 and not update_all \
                 and not add_channel_duplicate: at column 18: unexpected character "\"

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs