gluon-client-bridge: allow WLAN configs without ap section again

Fixes: 7ccdacd2 ("treewide: rework check_site_lib.lua")

package/gluon-client-bridge/check_site.lua

@@ -8,7 +8,7 @@ need_string_match(in_domain({'next_node', 'ip6'}), '^[%x:]+$', false)
 
 
 for _, config in ipairs({'wifi24', 'wifi5'}) do
-	if need_table({config}, nil, false) then
+	if need_table({config, 'ap'}, nil, false) then
 		need_string(in_domain({config, 'ap', 'ssid'}))
 		need_boolean({config, 'ap', 'disabled'}, false)
 	end