correcting API documentation

Revert "adding MacAddress key-value to docker API v1.15, POST containers/create"
This reverts commit 8651692c0ca312ccf84fd2aad8a5122e797b0e76.

Adding MacAddress API doc to v1.16

Adding what's new description

Signed-off-by: Malte Janduda <mail@janduda.net>