DOC: update SemiMonthEnd examples to not use (n=0)

[MarcoGorelli]

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/dev/reference/api/pandas.tseries.offsets.SemiMonthEnd.html

Documentation problem

Similar to #52106, SemiMonthEnd also needs updating

Suggested fix for documentation

cc @pranav-ravuri in case you wanted to submit a PR for this one too

Else I'll do it tomorrow

[pranav-ravuri]

Appreciate the offer but unfortunately I don't have access to my laptop for a couple of days, so best you finish this yourself. I will be actively searching searching for new issues where I can contribute to once I am reunited with my laptop! Thank you

[MarcoGorelli]

sure will do, thanks for the quick reply