DOC: Wrong examples 
#### Location of the documentation

https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Index.all.html

#### Documentation problem

This documentation is about 'pandas.Index.all' but it has examples of 'pandas.Index.any'.
The examples of 'pandas.Index.any' are also included in [its own page](https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Index.any.html).

#### Suggested fix for documentation

Delete 'any()' examples on the documentation of 'all()', I think this is wrong place.
