!17 fix: 修复 api.d.ts.vm 代码生成模板bug

Merge pull request !17 from 月祈风华/dev

docs/template/typings/api.d.ts.vm

@@ -1,5 +1,11 @@
 #set($BaseEntity = ['createDept', 'createBy', 'createTime', 'updateBy', 'updateTime'])
 #set($ModuleName = $moduleName.substring(0, 1).toUpperCase() + $moduleName.substring(1))
+/**
+ * Namespace Api
+ *
+ * All backend api type
+ */
+declare namespace Api {
     /**
      * namespace ${ModuleName}
      *
@@ -42,3 +48,4 @@ namespace ${ModuleName} {
         /** ${businessname} list */
         type ${BusinessName}List = Api.Common.PaginatingQueryRecord<${BusinessName}>;
     }
+}