doc: fix typo in `ToFer`

diff --git a/src/Symantic/Semantics/ToFer.hs b/src/Symantic/Semantics/ToFer.hs
index 5225a9e9fdaa7d1dd939dafc4b807d03091d4c7d..3192f73bd77f239e89f0a86be7273775edcf13cb 100644 (file)
--- a/src/Symantic/Semantics/ToFer.hs
+++ b/src/Symantic/Semantics/ToFer.hs
@@ -21,7 +21,7 @@ import Symantic.Syntaxes.TuplesOfFunctions
 -- | The 'ToFer' intermediate interpreter
 -- return Tuples-of-Functions instead of Eithers-of-Tuples.
 --
--- In other words, if transforms 'SumFunctor' into functions returning @(sem next)@
+-- In other words, it transforms 'SumFunctor' into functions returning @(sem next)@
 -- and 'ProductFunctor' into arguments of those functions.
 --
 -- This is like using an extension parameter introduced in