message: Fixing capitalization of PyPi.
diff: @@ -53,7 +53,7 @@ People who are a little more adventurous can also try our nightly binaries:
  **Nightly pip packages**
  * We are pleased to announce that TensorFlow now offers nightly pip packages
  under the [tf-nightly](https://pypi.python.org/pypi/tf-nightly) and
  -[tf-nightly-gpu](https://pypi.python.org/pypi/tf-nightly-gpu) project on pypi.
  +[tf-nightly-gpu](https://pypi.python.org/pypi/tf-nightly-gpu) project on PyPi.
  Simply run `pip install tf-nightly` or `pip install tf-nightly-gpu` in a clean
  environment to install the nightly TensorFlow build. We support CPU and GPU
  packages on Linux, Mac, and Windows.
  