[GHC] #15410: Fix typos in docs

[GHC]

#15410: Fix typos in docs
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        Reporter:  v0d1ch            |                Owner:  v0d1ch
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Documentation     |              Version:  8.4.3
      Resolution:                    |             Keywords:
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 v0d1ch):

 * owner:  (none) => v0d1ch


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15410#comment:1>
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