Fixed:Register set error

src/Config/Register.php

@@ -153,10 +153,10 @@ class Register
 					//如果space以“.”开头，与key的方式放在当前key下边如[dev:.space]，那么生成后的数据就是这样的[dev][space]否则是[space+dev]
 					if (substr($space, 0, 1) == '.') {
 						$space = substr($space, 1);
-						if (isset($config[$space])) $config[$name][$space] = array_merge($config[$space], $properties);;
+						if (isset($config[$space])) $config[$name][$space] = array_merge($config[$space], $properties);
 						continue;
 					}
-                    if(stristr($namespace, '.')) {
+                    if(stristr($space, '.')) {
                         if (isset($config[$space])) $config[$name] = $config[$space];
                     }else{
                         $config[$name] = $config[$name] ?? [];