message: Change comment to reflect scatter op
diff: @@ -55,7 +55,7 @@ bool IsReduceInputFusion(const HloInstruction& instr);
  // is either an unfused reduction-to-vector op or a reduce input fusion.
  bool IsInputFusibleReduction(const HloInstruction& instr);
  -// Whether `instr` is fusible as root of a reduce input fusions, i.e. `instr`
  +// Whether `instr` is fusible as root of a scatter input fusions, i.e. `instr`
  // is either an unfused scatter op or a scatter input fusion.
  bool IsInputFusibleScatter(const HloInstruction& instr);
  