DOC: Series.unique docstring can be moved to series.py

[jorisvandenbossche]

Note for the documentation sprint:

• The docstring of Series.unique is currently defined in pandas/core/base.py, but since the docstring is no longer shared but only used by Series.unique, the docstring can be moved to pandas/core/series.py as a normal docstring of the Series.unique definition

[limitup]

First time contributor. I will work on this!

[jorisvandenbossche]

Sorry, but I think it is better to leave this for the sprint tomorrow, if you did not yet start (otherwise there will be conflicts tomorrow)

[limitup]

Sounds good. I'm looking forward to the sprint tomorrow.

[Chitrank-Dixit]

Is anyone working on this issue ?, If not I want to work on this issue.

[jorisvandenbossche]

It is assigned to a local group of the pandas sprint