[IR] Fix copy and paste mistake in comment. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300031 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/IR/PatternMatch.h

@@ -1348,7 +1348,7 @@ template <typename Val_t> inline Signum_match<Val_t> m_Signum(const Val_t &V) {
 // Matchers for two-operands operators with the operators in either order
 //
 
-/// \brief Matches a Add with LHS and RHS in either order.
+/// \brief Matches a BinaryOperator with LHS and RHS in either order.
 template<typename LHS, typename RHS>
 inline match_combine_or<AnyBinaryOp_match<LHS, RHS>,
                         AnyBinaryOp_match<RHS, LHS>>