[GHC] #8904: haddock displays GHC.Types.Coercible as a datatype

[GHC]

#8904: haddock displays GHC.Types.Coercible as a datatype
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       Reporter:  nomeata           |             Owner:
           Type:  bug               |            Status:  new
       Priority:  low               |         Milestone:
      Component:  GHC API           |           Version:  7.9
       Keywords:                    |  Operating System:  Unknown/Multiple
   Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
     Difficulty:  Unknown           |         Test Case:
     Blocked By:                    |          Blocking:
Related Tickets:                    |
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 ...and not as a class. Appeared after #8894 was fixed.

 It is correct in Data.Coerce and GHC.Exts, so this is a minor issue.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8904>
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