fix typos

[ghost]

Experimental/monad-par-transformers/Control/Monad/Par/Engines/Internal.hs
examples/src/minimax/Prog.hs
examples/src/simple/pleasantly_par.hs
monad-par/Control/Monad/Par/IO.hs
monad-par/Control/Monad/Par/Scheds/Direct.hs
monad-par/Control/Monad/Par/Scheds/DirectInternal.hs
monad-par/Control/Monad/Par_Strawman.hs
monad-par/tests/TestHelpers.hs

---

monad-par/tests/TestHelpers.hs

for another PR this line could be improved

monad-par/tests/TestHelpers.hs

-- regardless of compile/interpret mode an opt lvl.