Update -protocol doc (#6681)

* Update -protocol to have more clear version wording

Co-Authored-By: Judith Malnick <judith.patudith@gmail.com>

website/source/docs/agent/options.html.md

@@ -399,9 +399,9 @@ The options below are all specified on the command-line.
   path for the agent to store its PID. This is useful for sending signals (for example, `SIGINT`
   to close the agent or `SIGHUP` to update check definite
 
-* <a name="_protocol"></a><a href="#_protocol">`-protocol`</a> - The Consul protocol version to
+* <a name="_protocol"></a><a href="#_protocol">`-protocol`</a> - The Consul protocol version to use. Consul agents speak protocol 2 by default,
-  use. This defaults to the latest version. This should be set only when [upgrading](/docs/upgrading.html).
+  however agents will automatically use protocol >2 when speaking to compatible agents. This should be set only when
-  You can view the protocol versions supported by Consul by running `consul -v`.
+  [upgrading](/docs/upgrading.html). You can view the protocol versions supported by Consul by running `consul -v`.
 
 * <a name="_raft_protocol"></a><a href="#_raft_protocol">`-raft-protocol`</a> - This controls the internal
   version of the Raft consensus protocol used for server communications. This must be set to 3 in order to