[Site]: Update info in Events calendar page

[yzeng25]

Current State

Description of the current state/issue:
Please help update the calendar and monthly meeting invitation link.
Link to the page:
https://apisix.apache.org/docs/general/events/
Screenshots (if relevant):

The calendar is empty.

This link for monthly meeting invitation is broken.

Click on this link and you'll get the following:

Desired State

Description of the change you are proposing:
Calendar and invitation link are updated.

Would you like to fix this issue?

No. Please assign another contributor

[SkyeYoung]

It looks like no community members are hosting community meetings right now, maybe we can consider removing some of the content

[yzeng25]

Yeah, do we want to temporarily hide the page or permenantly delete the page and links to the page on other pages?

[yzeng25]

Looks like the calendar thing has been disabled recently.