Pandas DOC: cross missing in how set of params

Pandas version checks

• [X] 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/reference/api/pandas.DataFrame.join.html

Documentation problem

Although there is a bullet point added for cross, it's missing from the top set

Suggested fix for documentation

add cross in the set of how params

Comment From: phofl

Hi, thanks for your report. This is already added on the dev docs