docs: update alternator entry on HTTPS
docs: update alternator entry on HTTPS

The HTTPS entry is updated - it's now supported, but still
misses the same features as HTTP - CRC headers, etc.

scylladb/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla,avikivity/scylla