message: Fix indentation in tensorflow SignatureDef proto comment to avoid confusion. The method_name should be on the same level of inputs/outputs.
diff: @@ -261,7 +261,7 @@ message TensorInfo {
  // graph.
  //
  // For example, a model with two loss computations, sharing a single input,
  -// might have the following signature_def map.
  +// might have the following signature_def map, in a MetaGraphDef message.
  //
  // Note that across the two SignatureDefs "loss_A" and "loss_B", the input key,
  // output key, and method_name are identical, and will be used by system(s) that
  @@ -287,9 +287,9 @@ message TensorInfo {
  // tensor_shape: ...
  // }
  // }
  +// method_name: "some/package/compute_loss"
  // }
  // ...
  -// method_name: "some/package/compute_loss"
  // }
  // signature_def {
  // key: "loss_B"
  @@ -310,9 +310,9 @@ message TensorInfo {
  // tensor_shape: ...
  // }
  // }
  +// method_name: "some/package/compute_loss"
  // }
  // ...
  -// method_name: "some/package/compute_loss"
  // }
  message SignatureDef {
  // Named input parameters.
  