Update documentation to reflect which sites are auto provisioned #1944
Description
The documentation at https://varyingvagrantvagrants.org/docs/en-US/references/default-sites/ includes trunk.wordpress.test as an automatically provisioned site. However, it is no longer a default site provisioned, and is only provisioned if vvv-custom.yml is edited.
Please update the documentation to reflect behavior more accurately. I think that having a listing of default sites and a listing of default but disabled sites would be useful, including instructions how to enable the disabled sites.