Embedded newlines in header or description are rendered incorrectly

[remkop]

For example, a Groovy dollar-slash string with embedded newlines:

@Command(header = $/@|bold,green \
  ___                            ___ _           _
 / __|_ _ ___  _____ ___  _     / __| |_  ___ __| |__ ____  _ _ __
| (_ | '_/ _ \/ _ \ V / || |   | (__| ' \/ -_) _| / /(_-< || | '  \ 
 \___|_| \___/\___/\_/ \_, |    \___|_||_\___\__|_\_\/__/\_,_|_|_|_| 
                       |__/ 
|@/$, ...

is rendered as

   ___                            ___ _           _
  / __|_
_ ___  _____ ___  _     / __| |_  ___ __| |__ ____  _ _ __
 | (_ | '_/ _ \\/
_ \\ V / || |   | (__| ' \\/ -_) _| / /(_-< || | '  \\
  \\___|_|
\\___/\\___/\\_/ \\_, |    \\___|_||_\\___\\__|_\\_\\/__/\\_,_|_|_|_|

                        |__/

Also, a Groovy multi-line string with embedded newlines

@Option(names = ["-a", "--algorithm"], description =
"""MD2, MD5, SHA-1, SHA-256, SHA-384, SHA-512, or
  any other MessageDigest algorithm. See [1] for more details.""")
@Field private String algorithm = "MD5"

is rendered as

  -a, --algorithm=<algorithm> MD2, MD5, SHA-1, SHA-256, SHA-384, SHA-512, or

                                any other MessageDigest algorithm. See [1] for
                                more details.
                                Default: MD5