config: Add more document for options
config: Add more document for options

For consistent_rangemovement, join_ring, load_ring_state, etc.

raphaelsc/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla,duarten/scylla,avikivity/scylla,kjniemi/scylla,raphaelsc/scylla,duarten/scylla,kjniemi/scylla,duarten/scylla,kjniemi/scylla,raphaelsc/scylla