Fix comment

Author: linuxrocks123

llvm/lib/Target/AMDGPU/SIISelLowering.cpp

@@ -8154,7 +8154,7 @@ SDValue SITargetLowering::lowerABSi16(SDValue Op, SelectionDAG &DAG) const {
   assert(Op.getValueType() == MVT::i16 &&
          "Tried to select abs i16 lowering with non-i16 type.");
 
-  // divergent means will not end up using SGPRs
+  // Divergent operands will not end up using SGPRs.
   if (Op->isDivergent())
     return SDValue();