MonadComprehensions docs should not claim 'guard' requires MonadPlus
Summary
Location of documentation issue: the GHC user's guide: https://ghc.gitlab.haskell.org/ghc/doc/users_guide/exts/monad_comprehensions.html
The docs claim that 'guard' needs MonadPlus, but it only needs Alternative. 'guard' was changed in base 4.8 released in Apr 2015 to use the 'new' Alternative class (which was added in base 4.4, GHC 7.2.1 from Aug 2011).
Proposed improvements or changes
It should reference 'Alternative' instead of MonadPlus.
Environment
master