Missing docs pages for some Series methods

[henryharbeck]

Description

In the "Methods" section of the Series page, methods such as count, eq, eq_missing, ge, etc. are listed, but are missing hyperlinks, and API reference pages altogether.

Link

https://docs.pola.rs/api/python/stable/reference/series/index.html#:~:text=2%0A%20%20%20%20%20%20%20%203%0A%5D-,Methods%3A,-abs

[cmdlineluser]

I think you'd just need to find out where the equivalent expr methods are

https://github.com/pola-rs/polars/blob/2eb1ac2841bc79c22efaf64bc42a6455008b0876/py-polars/docs/source/reference/expressions/aggregation.rst?plain=1#L12

And then do the same for the series files, i.e. reference/series/aggregation.rst

There is no reference/series/operators.rst file yet, so you'd likely have to create it.

https://github.com/pola-rs/polars/blob/2eb1ac2841bc79c22efaf64bc42a6455008b0876/py-polars/docs/source/reference/expressions/operators.rst?plain=1#L26

And then add it to reference/series/index.rst so that it also gets listed in the Section Navigation.

https://github.com/pola-rs/polars/blob/2eb1ac2841bc79c22efaf64bc42a6455008b0876/py-polars/docs/source/reference/expressions/index.rst?plain=1#L24