Fix the code generation delete schema template (#708)

Author: wu-clan

backend/plugin/code_generator/templates/python/schema.jinja

@@ -23,9 +23,11 @@ class Update{{ schema_name }}Param({{ schema_name }}SchemaBase):
     """更新{{ doc_comment }}参数"""
 
 
-class Delete{{ schema_name }}Param({{ schema_name }}SchemaBase):
+class Delete{{ schema_name }}Param(SchemaBase):
     """删除{{ doc_comment }}参数"""
 
+    pks: list[int] = Field(description='{{ doc_comment }} ID 列表')
+
 
 class Get{{ schema_name }}Detail({{ schema_name }}SchemaBase):
     """{{ doc_comment }}详情"""