message: Add comment for fused activation.
diff: @@ -63,8 +63,8 @@ typedef struct {
  typedef enum {
  kTfLiteActNone = 0,
  kTfLiteActRelu,
  - kTfLiteActRelu1,
  - kTfLiteActRelu6,
  + kTfLiteActRelu1, // min(max(-1, x), 1)
  + kTfLiteActRelu6, // min(max(0, x), 6)
  kTfLiteActTanh,
  kTfLiteActSignBit,
  kTfLiteActSigmoid,
  