The opening and closing mechanic varied between all the various
resources. This changes them all to use a HEREDOC with a tilde
to remove leading whitespace. This removes the need for the
special method to trim the `#print_example` method from shell.
Signed-off-by: Franklin Webber <franklin.webber@gmail.com>
Without the terminating character ($), it just accepted any characters
at all after the initial matching set.
Also add some tests to assure we're raising appropriately.
Co-authored-by: Trevor Bramble <tbramble@chef.io>
Co-authored-by: Joshua Padgett <jpadgett@chef.io>
Signed-off-by: Trevor Bramble <tbramble@chef.io>
