incorrect URL links in VTN user guide

https://www.opendaylight.org/ -> User Guide -> vtn/vtn-user.adoc -> VTN_Overview.adoc
has a non-existing link to:
https://jenkins.opendaylight.org/releng/view/vtn/job/vtn-merge-master/lastSuccessfulBuild/artifact/manager/northbound/target/site/wsdocs/rest.html

On the same page there are non-existing links to png files (figure 2, 3, 4, 5):
https://github.com/opendaylight/docs/blob/stable/lithium/manuals/user-guide/src/main/asciidoc/vtn/vtn/VTN_Construction.jpg

https://github.com/opendaylight/docs/blob/stable/lithium/manuals/user-guide/src/main/asciidoc/vtn/vtn/VTN_Mapping.jpg

https://github.com/opendaylight/docs/blob/stable/lithium/manuals/user-guide/src/main/asciidoc/vtn/vtn/VTN_Flow_Filter.jpg

https://github.com/opendaylight/docs/blob/stable/lithium/manuals/user-guide/src/main/asciidoc/vtn/vtn/VTN_API.jpg

They should probably all point to:
https://github.com/opendaylight/docs/tree/stable/lithium/manuals/user-guide/src/main/resources/images/vtn