Fix the 'inet_ssl' distribution module

etc/emq.conf

@@ -236,7 +236,7 @@ node.crash_dump = {{ platform_log_dir }}/crash.dump
 ## Value: Enum
 ##  - inet_tcp: the default; handles TCP streams with IPv4 addressing.
 ##  - inet6_tcp: handles TCP with IPv6 addressing.
-##  - inet_ssl: using SSL for Erlang Distribution.
+##  - inet_tls: using TLS for Erlang Distribution.
 ##
 ## vm.args: -proto_dist inet_tcp
 node.proto_dist = inet_tcp

priv/emq.schema

@@ -171,7 +171,7 @@ end}.
 %% @doc The erlang distributed protocol
 {mapping, "node.proto_dist", "vm_args.-proto_dist", [
   {default, "inet_tcp"},
-  {datatype, {enum, [inet_tcp, inet6_tcp, inet_ssl]}},
+  {datatype, {enum, [inet_tcp, inet6_tcp, inet_tls]}},
   hidden
 ]}.