[GHC] #7444: Update documentation regarding derivability of Generic1

[GHC]

#7444: Update documentation regarding derivability of Generic1
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        Reporter:  spl               |                Owner:  dreixel
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.7
      Resolution:  fixed             |             Keywords:  Generics
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * keywords:   => Generics


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7444#comment:6>
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