DOC: The Slack invite link to join the Pandas Dev community is broken

[ButteryPaws]

Pandas version checks

• I have checked that the issue still exists on the latest versions of the docs on main here

Location of the documentation

https://pandas.pydata.org/docs/dev/development/community.html#community-slack

Documentation problem

This issue was raised before #61298 but I do not have permission to reopen the issue. On clicking the link, one lands on this page

Suggested fix for documentation

Someone from the Slack admin team needs to update the link to the documentation.