the --force-build flag should not be in the docker section

[rokroskar]

The --force-build flag to renku session start appears in the "docker configuration" section of the help text - it should be in the "options" section as it is "native" to renku. Using that flag results in an error:

TypeError: run() got an unexpected keyword argument 'force_build'

[Panaetius]

I addressed the bug in a PR but the "docker" section of the docs is for the docker provider, not for docker the software, force-build is exclusive for the docker provider (it doesn't exist on the renkulab provider), so I left that as is.