DOC: code of conduct link doesn't work

[MarcoGorelli]

Location of the documentation

https://pandas.pydata.org/about/team.html

Note: You can check the latest versions of the docs on master here.

Documentation problem

We have a code of conduct to ensure a friendly and welcoming environment.

"code of conduct" links to https://pandas.pydata.org/about/%7Bbase_url%7D/community/coc.html , which doesn't exist

Suggested fix for documentation

Link to correct page

[MarcoGorelli]

While we're here, it also says

pandas is made with love by more than 1,500 volunteer contributors.

which could be updated to "more than 2,000"