[Docs] Broken Links

URL(s) with the issue:

Please provide a link to the documentation entry:
https://tensorflow.github.io/serving/

Description of issue (what needs changing):

After merging PR #2254, there are still bona fide broken links. These are not technical issues with the documentation stack, but rather links from the authors of the docs that point to invalid locations or get 404 responses.

Here is a list generated by lychee:

Broken links:

Errors in ./api/api_rest.md

• [404] https://www.tensorflow.org/versions/r1.1/programmers_guide/dims_types#data_types | Failed: Network error: Not Found

Errors in ./guide/serving_kubernetes.md

• [404] http://kubernetes.io/docs/user-guide/kubectl-overview/ | Failed: Network error: Not Found
• [404] http://kubernetes.io/docs/user-guide/deployments/ | Failed: Network error: Not Found
• [404] http://kubernetes.io/docs/user-guide/services/ | Failed: Network error: Not Found
• [404] http://kubernetes.io/docs/user-guide/load-balancer/ | Failed: Network error: Not Found

Errors in ./guide/docker.md

• [404] https://docs.docker.com/toolbox/ | Failed: Network error: Not Found

Errors in ./guide/signature_defs.md

• [404] https://github.com/tensorflow/tensorflow/blob/master/tensorflow/contrib/session_bundle/manifest.proto | Failed: Network error: Not Found
• [404] https://github.com/tensorflow/tensorflow/blob/master/tensorflow/contrib/session_bundle/README.md | Failed: Network error: Not Found
• [404] https://github.com/tensorflow/tensorflow/blob/master/tensorflow/contrib/session_bundle/session_bundle.h | Failed: Network error: Not Found

Errors in ./guide/serving_advanced.md

• [404] http://www.tensorflow.org/tutorials/mnist/beginners/index.html#mnist-for-ml-beginners | Failed: Network error: Not Found