修复CRUD关联模型下，自定义控制器生成的被关联表模型namespace错误

application/admin/command/Crud.php

@@ -963,7 +963,7 @@ class Crud extends Command
 
             if ($relations) {
                 foreach ($relations as $i => $relation) {
-                    $relation['modelNamespace'] = $data['modelNamespace'];
+                    $relation['modelNamespace'] = $relation['relationNamespace'];
                     if (!is_file($relation['relationFile'])) {
                         // 生成关联模型文件
                         $this->writeToFile('relationmodel', $relation, $relation['relationFile']);