Two deadlinks in fluid documentation

[weixing02]

Fix most of deadlinks in fluid documentation, but there are still two deadlinks that i can't solve:

file:

• https://github.com/PaddlePaddle/Paddle/blob/develop/doc/fluid/design/motivation/api.md

page:

• http://www.paddlepaddle.org/docs/develop/documentation/fluid/en/design/motivation/api.html

deadlinks:

• https://github.com/PaddlePaddle/book/tree/develop/gan

---

file:

• https://github.com/PaddlePaddle/Paddle/blob/develop/doc/fluid/design/multi_devices/operator_kernel_type.md

page:

• http://www.paddlepaddle.org/docs/develop/documentation/fluid/en/design/multi_devices/operator_kernel_type.html

deadlinks:

• http://01org.github.io/mkl-dnn/structmkldnn_1_1memory.html

[luotao1]

1. since we don't have gan in book repo, this link should be removed.
2. http://01org.github.io is moved to http://intel.github.io