gluon-config-mode-mesh-vpn: fix indentation

package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/reboot/0100-mesh-vpn.lua

@@ -11,10 +11,10 @@ else
   local site = require 'gluon.site_config'
   local sysconfig = require 'gluon.sysconfig'
 
-	local pretty_hostname = require 'pretty_hostname'
+  local pretty_hostname = require 'pretty_hostname'
 
   local pubkey = util.trim(util.exec("/etc/init.d/fastd show_key " .. "mesh_vpn"))
-	local hostname = pretty_hostname.get(uci)
+  local hostname = pretty_hostname.get(uci)
   local contact = uci:get_first("gluon-node-info", "owner", "contact")
 
   local msg = i18n.translate('gluon-config-mode:pubkey')