DOC: fix PR02 for pandas.tseries.offsets.*
Related to https://github.com/pandas-dev/pandas/issues/58536
- Fixes most of the PR02 checks in `pandas.tseries.offsets.*` 

Full list of code checks addressed:
```
pandas.tseries.offsets.BQuarterBegin PR02
pandas.tseries.offsets.BYearEnd PR02
pandas.tseries.offsets.DateOffset PR02
pandas.tseries.offsets.Easter PR02
pandas.tseries.offsets.FY5253 PR02
pandas.tseries.offsets.FY5253Quarter PR02
pandas.tseries.offsets.Hour PR02
pandas.tseries.offsets.LastWeekOfMonth PR02
pandas.tseries.offsets.Micro PR02
pandas.tseries.offsets.Milli PR02
pandas.tseries.offsets.Minute PR02
pandas.tseries.offsets.MonthBegin PR02
pandas.tseries.offsets.Nano PR02
pandas.tseries.offsets.QuarterBegin PR02
pandas.tseries.offsets.Second PR02
pandas.tseries.offsets.SemiMonthBegin PR02
pandas.tseries.offsets.Week PR02
pandas.tseries.offsets.WeekOfMonth PR02
```

Thanks @abhinav-thimma 