Fixes incorrect API spec for items moved to HostConfig

DNS and VolumesFrom were moved to HostConfig and as such are part of the
container start and not create.
For some reason 0.10 docs are correct (except for a missing quote in the
JSON") but 0.11 and latest are not.

Docker-DCO-1.1-Signed-off-by: cpuguy83 <cpuguy83@gmail.com> (github: cpuguy83)
Merge pull request #6215 from cpuguy83/fix_volumes_from_api_doc

Fixes incorrect API spec for items moved to HostConfig