message: Fix typo in concatenation.cc
diff: @@ -121,7 +121,7 @@ TfLiteStatus Eval(TfLiteContext* context, TfLiteNode* node) {
  // TODO(ahentz): Creating 'all_inputs' below is not very efficient. We should
  // allocate and populate these during Prepare().
  -// TODO(ycling): Activation function parameter is ignored. For now we dont have
  +// TODO(ycling): Activation function parameter is ignored. For now we don't have
  // a model with a Concatenation with fused activation function.
  #define TF_LITE_CONCATENATION(scalar) \
  { \
  