Update README with community meeting details (#2525)

* Update README with community meeting details

Added information about monthly community meetings and recordings.

* Change QR code image width from 60% to 80%

Updated the community QR code image size in the README.

* Update community QR code image in README

Author: Takuka0311

README.md

@@ -32,6 +32,8 @@ LoongCollector is a key component of LoongSuite(Alibaba's unified observability
 * [LoongSuite Java Agent](https://github.com/alibaba/loongsuite-java-agent): a process agent for Java applications.
 * Other upcoming language agent.
 
+The LoongSuite open-source community hosts monthly online sharing meetings. The meeting access link for each meeting will be posted to GitHub Discussions and shared in the DingTalk and WeChat groups within one week prior to the event. Recordings of past meetings are available on [Bilibili](https://space.bilibili.com/630680534/lists/1530630). 
+
 ### 🚀 Core Advantages
 
 - **⚡ High Performance**
@@ -181,7 +183,7 @@ We welcome contributions from the community! Here are some ways you can help:
 - **WeChat/DingTalk**: LoongCollector社区
 
 <div align="center">
-<img src="https://ilogtail-community-edition.oss-cn-shanghai.aliyuncs.com/images/chatgroup/chatgroup.png" alt="Community QR Code" width="60%"/>
+<img src="https://ilogtail-community-edition.oss-cn-shanghai.aliyuncs.com/images/chatgroup/chatgroup_20260203.png" alt="Community QR Code" width="80%"/>
 </div>
 
 ### Other LoongSuite components's Community contact information