message: Fix docstring for precision_config.
diff: @@ -250,7 +250,7 @@ def conv(lhs,
  rhs_dilation: dilation to apply between kernel elements
  dimension_numbers: a `ConvolutionDimensionNumbers` proto.
  feature_group_count: number of feature groups for grouped convolution.
  - precision_config: a `PrecisionConfigProto` proto.
  + precision_config: a `xla.PrecisionConfig` proto.
  name: an optional name for the operator
  Returns:
  