Add DeepSubsumption to Haskell2010 documentation
As pointed out in #23285 (comment 494607) by @trac-nicuveo, the documentation for Haskell2010 doesn't include the DeepSubsumption
extension which is enabled by Haskell2010
As pointed out in #23285 (comment 494607) by @trac-nicuveo, the documentation for Haskell2010 doesn't include the DeepSubsumption
extension which is enabled by Haskell2010