Update a comment

Author: lukel97

llvm/lib/Transforms/Vectorize/VPlan.h

@@ -2239,7 +2239,7 @@ class VPInterleaveRecipe : public VPRecipeBase {
 /// a vector operand into a scalar value, and adding the result to a chain.
 /// The Operands are {ChainOp, VecOp, [Condition]}.
 class VPReductionRecipe : public VPRecipeWithIRFlags {
-  /// The recurrence decriptor for the reduction in question.
+  /// The recurrence kind for the reduction in question.
   RecurKind RdxKind;
   bool IsOrdered;
   /// Whether the reduction is conditional.