[IPP] [PWG5101.1] Issue #76: Section 6: "media-coating" attribute is not registered in IANA IPP Registry

[msweet at apple.com]

[Issue Unconfirmed]

I think this is a typo. The intent is to have this apply to
media-front-coating and media-back-coating (all of the media-xxx-coating
attributes).

Link: http://www.pwg.org/issues/76