fix: clarify docs on run subcommand
fix: clarify docs on run subcommand

[ci skip]
alexquick/dokku,claytonbrown/dokku,dokku/dokku,alexquick/dokku,dokku/dokku,claytonbrown/dokku,alexquick/dokku,dokku/dokku,claytonbrown/dokku,claytonbrown/dokku,alexquick/dokku,jimjag/dokku,alexquick/dokku,jimjag/dokku,progrium/dokku,jimjag/dokku,dokku/dokku,progrium/dokku,claytonbrown/dokku,claytonbrown/dokku,progrium/dokku,alexquick/dokku,jimjag/dokku,dokku/dokku,alexquick/dokku,progrium/dokku,dokku/dokku,claytonbrown/dokku,progrium/dokku,dokku/dokku,progrium/dokku,progrium/dokku,dokku/dokku,progrium/dokku,jimjag/dokku,jimjag/dokku,alexquick/dokku,claytonbrown/dokku,jimjag/dokku,jimjag/dokku