update contribute guide and readme

Signed-off-by: NNEEN <neen.yang@huawei.com>

zh-cn/contribute/贡献代码.md

@@ -36,10 +36,13 @@
 
 [代码门禁详细质量要求](https://gitee.com/openharmony/community/blob/master/sig/sig-QA/%E4%BB%A3%E7%A0%81%E9%97%A8%E7%A6%81%E8%A6%81%E6%B1%82.md)。
 
+[需求类Issue处理指导](https://gitee.com/openharmony/community/blob/master/sig/sig-QA/issue%EF%BC%88%E9%9C%80%E6%B1%82%E7%B1%BB%EF%BC%89%E5%A4%84%E7%90%86%E6%8C%87%E5%AF%BC.md)
+
+[缺陷类Issue处理指导](https://gitee.com/openharmony/community/blob/master/sig/sig-QA/issue-%E7%BC%BA%E9%99%B7%E7%B1%BB-%E5%A4%84%E7%90%86%E6%8C%87%E5%AF%BC.md)
+
 ## 社区安全问题披露<a name="section725624119448"></a>
 
 -   [安全问题处理和发布流程](https://gitee.com/openharmony/security/blob/master/zh/security-process/README.md)
-
 -   [安全和披露说明](https://gitee.com/openharmony/security/blob/master/zh/security-process/security-disclosure.md)
 
 

zh-cn/readme/分布式任务调度子系统.md

@@ -19,7 +19,7 @@
 **图 1**  子系统架构图<a name="fig4460722185514"></a>
 
 
-![](figures/dms-architecture_zh.png)
+![](figures/dms-architecture.png)
 
 ## 目录<a name="section161941989596"></a>