Update public documentation to move away from the query services

In Synapse Python client version 1.9.0, we removed the public facing functions that uses the query services. We are going to replace the implementation of synapse list in version 1.9.1. We missed synapse get -q option. brought to my attention that there are public documentation on different projects in Synapse that instructs users to use synapse get -q. For example: https://www.synapse.org/#!Synapse:syn2942337/wiki/401927

At the very least, we should notify all project admins that has these instructions to update their instructions to use File View queries. I am creating this issue to brought into the discussion.