update rn Readme.md add 3.0.8

Signed-off-by: NtheChangL <448706817@qq.com>

zh-cn/release-notes/Readme.md

@@ -8,15 +8,16 @@
 - [OpenHarmony v3.2 Beta2 (2022-07-30)](OpenHarmony-v3.2-beta2.md)
 - [OpenHarmony v3.2 Beta1 (2022-05-31)](OpenHarmony-v3.2-beta1.md)
 - [OpenHarmony v3.1 Release (2022-03-30)](OpenHarmony-v3.1-release.md)
-- [OpenHarmony v3.1.7 Release (2023-03-22)](OpenHarmony-v3.1.7-release.md)
-- [OpenHarmony v3.1.6 Release (2023-01-30)](OpenHarmony-v3.1.6-release.md)
-- [OpenHarmony v3.1.5 Release (2022-12-30)](OpenHarmony-v3.1.5-release.md)
+- [OpenHarmony v3.1.7 Release (2023-04-04)](OpenHarmony-v3.1.7-release.md)
+- [OpenHarmony v3.1.6 Release (2023-02-06)](OpenHarmony-v3.1.6-release.md)
+- [OpenHarmony v3.1.5 Release (2023-01-10)](OpenHarmony-v3.1.5-release.md)
 - [OpenHarmony v3.1.4 Release (2022-11-02)](OpenHarmony-v3.1.4-release.md)
 - [OpenHarmony v3.1.3 Release (2022-09-30)](OpenHarmony-v3.1.3-release.md)
 - [OpenHarmony v3.1.2 Release (2022-08-24)](OpenHarmony-v3.1.2-release.md)
 - [OpenHarmony v3.1.1 Release (2022-05-31)](OpenHarmony-v3.1.1-release.md)
 - [OpenHarmony v3.1 Beta (2021-12-31)](OpenHarmony-v3.1-beta.md)
 - [OpenHarmony v3.0 LTS (2021-09-30)](OpenHarmony-v3.0-LTS.md)
+- [OpenHarmony v3.0.8 LTS (2022-03-03)](OpenHarmony-v3.0.8-LTS.md)
 - [OpenHarmony v3.0.7 LTS (2022-12-05)](OpenHarmony-v3.0.7-LTS.md)
 - [OpenHarmony v3.0.6 LTS (2022-09-15)](OpenHarmony-v3.0.6-LTS.md)
 - [OpenHarmony v3.0.5 LTS (2022-07-01)](OpenHarmony-v3.0.5-LTS.md)