DOC: Style extensibility doc links to invalid ecosystem page

[Aloqeely]

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/user_guide/style.html#Extensibility

Documentation problem

Page says

If you build a great library on top of this, let us know and we’ll link to it.

but the hyperlink is invalid.

Suggested fix for documentation

Should link to https://pandas.pydata.org/community/ecosystem.html instead.