[DS-4891][docs] update DolphinScheduler slack invitation url (#5167)

update DolphinScheduler slack invitation url
Co-authored-by: NKonsonChow <KonsonChow@gmail.com>

README.md

@@ -87,7 +87,7 @@ We would like to express our deep gratitude to all the open-source projects used
 ## Community
 
 You are very welcome to communicate with the developers and users of Dolphin Scheduler. There are two ways to find them:
-1. Join the Slack channel by [this invitation link](https://join.slack.com/t/asf-dolphinscheduler/shared_invite/zt-mzqu52gi-rCggPkSHQ0DZYkwbTxO1Gw).
+1. Join the Slack channel by [this invitation link](https://join.slack.com/t/asf-dolphinscheduler/shared_invite/zt-omtdhuio-_JISsxYhiVsltmC5h38yfw).
 2. Follow the [Twitter account of Dolphin Scheduler](https://twitter.com/dolphinschedule) and get the latest news on time.
 
 ## How to Contribute

README_zh_CN.md

@@ -92,7 +92,7 @@ Dolphin Scheduler使用了很多优秀的开源项目，比如google的guava、g
 
 ## 社区
 
-1. 通过[该申请链接](https://join.slack.com/t/asf-dolphinscheduler/shared_invite/zt-mzqu52gi-rCggPkSHQ0DZYkwbTxO1Gw)加入slack channel
+1. 通过[该申请链接](https://join.slack.com/t/asf-dolphinscheduler/shared_invite/zt-omtdhuio-_JISsxYhiVsltmC5h38yfw)加入slack channel
 2. 关注[Apache Dolphin Scheduler的Twitter账号](https://twitter.com/dolphinschedule)获取实时动态
 
 ## 版权