docs: update communite links

[thonatos]

Checklist

• npm test passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

Description of change

• change home page link to telegram channel
• move dingtalk qrcode to community page

[codecov]

Codecov Report

Base: 99.85% // Head: 99.85% // No change to project coverage 👍

Coverage data is based on head (d0ab5c9) compared to base (a45a5bc).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5073   +/-   ##
=======================================
  Coverage   99.85%   99.85%           
=======================================
  Files          35       35           
  Lines        3462     3462           
  Branches      504      504           
=======================================
  Hits         3457     3457           
  Misses          5        5           

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[monkindey]

请问下 Egg 的 Telegram Channel 全名是什么呢？好像我的 telegram 终端不支持扫码