企业微信-批量获取客户详情入参优化 (#657)

* 企业微信-批量获取客户详情入参优化

---------

Co-authored-by: wang.yu <wangyu@uniondrug.com>
Co-authored-by: markwang <www.wang61@qq.com>

work/externalcontact/external_user.go

@@ -123,6 +123,7 @@ func (r *Client) GetExternalUserDetail(externalUserID string, nextCursor ...stri
 type BatchGetExternalUserDetailsRequest struct {
 	UserIDList []string `json:"userid_list"`
 	Cursor     string   `json:"cursor"`
+	Limit      int      `json:"limit,omitempty"`
 }
 
 // ExternalUserDetailListResponse 批量获取外部联系人详情响应