disambiguate documentation for pandas.Series replace
Currently, the `pandas.Series` that is used for the example for `pandas.Series.replace` has an index which is identical to its values (i.e. `pandas.Series([0, 1, 2, 3, 4])`). This can be quite confusing at a first glance (as it was for me), as I assumed that `pandas.Series.replace` was using the index of the series (whereas it is actually using the values). Updated the documentation to use `pandas.Series([1, 2, 3, 4, 5])` to remove this ambiguity.

Can you merge master code-checks should now be fixed?  pre commit checks are failing @jreback @alimcmaster1 apologies for the delay - made a very silly mistake and it took me longer than it should have to track it down 👍 Looks like one of the tests timed-out, but the rest are okay?  thanks @el-iot 