[GHC] #15006: User guide uses cnd.mathjax.org, which has shut down

[GHC]

#15006: User guide uses cnd.mathjax.org, which has shut down
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           Reporter:  lyxia          |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.4.3
          Component:  Documentation  |           Version:  8.4.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Documentation
  Unknown/Multiple                   |  bug
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 The user guide is linking to cdn.mathjax.org to load mathjax, but it has
 shut down since last year.

 https://www.mathjax.org/cdn-shutting-down/

 For example, the "\(I\)" are not being rendered:


 > Find all instances \(I\) that match the target constraint; that is, the
 target constraint is a substitution instance of \(I\). These instance
 declarations are the candidates.

 https://downloads.haskell.org/~ghc/8.4.1/docs/html/users_guide/glasgow_exts.html
 #instance-overlap

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15006>
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