typo in docstring for exteriorPower

Author: DanielJHorton

Mathlib/LinearAlgebra/ExteriorAlgebra/Basic.lean

@@ -74,7 +74,7 @@ section exteriorPower
 -- New variables `n` and `M`, to get the correct order of variables in the notation.
 variable (n : ℕ) (M : Type u2) [AddCommGroup M] [Module R M]
 
-/-- Definition of the `n`th exterior power of an `R`-module `N`. We introduce the notation
+/-- Definition of the `n`th exterior power of an `R`-module `M`. We introduce the notation
 `⋀[R]^n M` for `exteriorPower R n M`. -/
 abbrev exteriorPower : Submodule R (ExteriorAlgebra R M) :=
   LinearMap.range (ι R : M →ₗ[R] ExteriorAlgebra R M) ^ n