message: Fix build status link
diff: @@ -83,7 +83,7 @@ The TensorFlow project strives to abide by generally accepted best practices in
  | --- | --- | --- |
  | **Linux CPU** | ![Status](https://storage.googleapis.com/tensorflow-kokoro-build-badges/ubuntu-cc.png) | [pypi](https://pypi.org/project/tf-nightly/) |
  | **Linux GPU** | ![Status](https://storage.googleapis.com/tensorflow-kokoro-build-badges/ubuntu-gpu-py3.png) | [pypi](https://pypi.org/project/tf-nightly-gpu/) |
  -| **Linux XLA** | ![Status](https://storage.googleapis.com/tensorflow-kokoro-build-badges/ubuntu-xla.png | TBA |
  +| **Linux XLA** | ![Status](https://storage.googleapis.com/tensorflow-kokoro-build-badges/ubuntu-xla.png) | TBA |
  | **MacOS** | ![Status](https://storage.googleapis.com/tensorflow-kokoro-build-badges/macos-py2-cc.png) | [pypi](https://pypi.org/project/tf-nightly/) |
  | **Windows CPU** | ![Status](https://storage.googleapis.com/tensorflow-kokoro-build-badges/windows-cpu.png) | [pypi](https://pypi.org/project/tf-nightly/) |
  | **Windows GPU** | ![Status](https://storage.googleapis.com/tensorflow-kokoro-build-badges/windows-gpu.png) | [pypi](https://pypi.org/project/tf-nightly-gpu/) |
  