[Minor] configwizard: really use LOCAL_CONFDIR

lualib/rspamadm/configwizard.lua

@@ -15,7 +15,7 @@ limitations under the License.
 ]]--
 
 local ansicolors = require "ansicolors"
-local local_conf = rspamd_paths['CONFDIR']
+local local_conf = rspamd_paths['LOCAL_CONFDIR']
 local rspamd_util = require "rspamd_util"
 local rspamd_logger = require "rspamd_logger"
 local lua_util = require "lua_util"