docs: update Slack invitation link (#4387)

README.md

@@ -40,7 +40,7 @@ The technical architecture of Apache APISIX:
 
 - Mailing List: Mail to [email protected], follow the reply to subscribe to the mailing list.
 - QQ Group - 578997126
-- [Slack Workspace](https://join.slack.com/t/the-asf/shared_invite/zt-mrougyeu-2aG7BnFaV0VnAT9_JIUVaA) - join `#apisix` on our Slack to meet the team and ask questions
+- [Slack Workspace](https://join.slack.com/t/the-asf/shared_invite/zt-nggtva4i-hDCsW1S35MuZ2g_2DgVDGg) - join `#apisix` on our Slack to meet the team and ask questions
 - ![Twitter Follow](https://img.shields.io/twitter/follow/ApacheAPISIX?style=social) - follow and interact with us using hashtag `#ApacheAPISIX`
 - [bilibili video](https://space.bilibili.com/551921247)
 - **Good first issues**:

docs/zh/latest/README.md

@@ -40,7 +40,7 @@ Apache APISIX 的技术架构如下图所示：
 
 - 邮件列表 - 发送任意内容到 [email protected] 后，根据回复以订阅邮件列表。
 - QQ 群 - 578997126
-- [Slack](http://s.apache.org/slack-invite) - 加入 `#apisix` 频道以便与成员交流。
+- [Slack](https://join.slack.com/t/the-asf/shared_invite/zt-nggtva4i-hDCsW1S35MuZ2g_2DgVDGg) - 加入 `#apisix` 频道以便与成员交流。
 - ![Twitter Follow](https://img.shields.io/twitter/follow/ApacheAPISIX?style=social) - 使用标签 `#ApacheAPISIX` 关注我们并与我们互动。
 - [哔哩哔哩](https://space.bilibili.com/551921247)
 - **新手任务列表**