Help output for individual commands is broken #883

$ gh help pr
Work with GitHub pull requests.

A pull request can be supplied as argument in any of the following formats:
- by number, e.g. "123";
- by URL, e.g. "https://github.com/OWNER/REPO/pull/123"; or
- by the name of its head branch, e.g. "patch-1" or "OWNER:patch-1".

USAGE
pr

CORE COMMANDS


ADDITIONAL COMMANDS
  checkout:   Check out a pull request in Git
  close:      Close a pull request
  create:     Create a pull request
  list:       List and filter pull requests in this repository
  reopen:     Reopen a pull request
  status:     Show status of relevant pull requests
  view:       View a pull request

FLAGS


EXAMPLES
  $ gh issue create
  $ gh repo clone
  $ gh pr checkout 321

LEARN MORE
  Use "gh <command> <subcommand> --help" for more information about a command.
  Read the manual at <http://cli.github.com/manual>

FEEDBACK
  Fill out our feedback form <https://forms.gle/umxd3h31c7aMQFKG7>
  Open an issue using “gh issue create -R cli/cli”