message: Fix two simple spelling errors.
  Summary: Fixing two simple doc errors.
  Test Plan: None
  Reviewers: #tensorflow, #framework_ip_review_-_any_oss_or_third-party_code_use_has_been_approved, georgep
  Maniphest Tasks: T17459
diff: @@ -153,8 +153,8 @@ class PipelinedModel(Model):
  - The model cannot be called using the __call__() interface.
  The model will only be constructed after the first call to the `fit` method,
  - so a summary of the model will net be possible until after some training
  - has occurred. Related this this, the `build` method does not build the
  + so a summary of the model will not be possible until after some training
  + has occurred. Related to this, the `build` method does not build the
  model.
  Example:
  