refactor: alias ssh-keys:default to ssh-keys:help

plugins/ssh-keys/subcommands/default

@@ -1,12 +1,5 @@
 #!/usr/bin/env bash
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
-source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
-source "$PLUGIN_AVAILABLE_PATH/ssh-keys/functions"
+source "$PLUGIN_AVAILABLE_PATH/ssh-keys/internal-functions"
 
-ssh_keys_main_cmd() {
-  declare desc="an alias for ssh-keys:list"
-  local cmd="ssh-keys"
-  list_ssh_keys
-}
-
-ssh_keys_main_cmd "$@"
+ssh_keys_help_cmd "$@"