[GHC] #8471: 7.8.1 release notes typo

[GHC]

#8471: 7.8.1 release notes typo
-------------------------------+-------------------------------------------
        Reporter:  errge       |            Owner:
            Type:  bug         |           Status:  new
        Priority:  normal      |        Milestone:  7.8.1
       Component:              |          Version:  7.7
  Documentation                |         Keywords:
      Resolution:              |     Architecture:  Unknown/Multiple
Operating System:              |       Difficulty:  Easy (less than 1 hour)
  Unknown/Multiple             |       Blocked By:
 Type of failure:              |  Related Tickets:
  None/Unknown                 |
       Test Case:              |
        Blocking:              |
-------------------------------+-------------------------------------------

Comment (by monoidal):

 Fixed in edea03af1c85dda847aa9e559b153fd43dbba177.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8471#comment:1>
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