DOC: Fix the navigation bar

[easternsun7]

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/reference/api/pandas.DataFrame.head.html#

Documentation problem

pandas.DataFrame.head and pandas.DataFrame.tail appear twice in the navigation bar, and they jump to the same location.

Suggested fix for documentation

I think the duplication in the navigation bar is a small bug, consider removing duplicate links in the documentation.

[easternsun7]

If you think it should be removed, I can submit a PR to change it.

[owengrimaldi]

take