DOCS: fix docstring validation error for pandas.Series
Partially addresses https://github.com/pandas-dev/pandas/issues/59592

Fixes
```
-i "pandas.Series.dt.normalize PR01" \
-i "pandas.Series.dt.qyear GL08" \
```
Thanks for the pull request, but it appears to have gone stale. If interested in continuing, please merge in the main branch, address any review comments and/or failing tests, and we can reopen.