DOC PR09 Add "." on to_hdf format parameter

[marvintensuan]

• closes #xxxx
• tests added / passed
• Ensure all linting tests pass, see here for how to run them
• whatsnew entry

From #28602:

pandas.Series.to_hdf: Parameter "format" description should finish with "."
pandas.DataFrame.to_hdf: Parameter "format" description should finish with "."

[MarcoGorelli]

thanks - are there many more PR09 errors? If you wanted to take on more of them (even in the same PR) and that add this to the CI check, that'd be awesome

[marvintensuan]

@MarcoGorelli From what I've seen, these are all done:

pandas.read_excel: Parameter "usecols" description should finish with "."
pandas.read_sql: Parameter "con" description should finish with "."
pandas.DataFrame.corr: Parameter "method" description should finish with "."
pandas.Series.to_sql: Parameter "con" description should finish with "."
pandas.DataFrame.to_sql: Parameter "con" description should finish with "."
pandas.io.formats.style.Styler: Parameter "na_rep" description should finish with "."
pandas.io.formats.style.Styler.format: Parameter "formatter" description should finish with "."
pandas.io.formats.style.Styler.format: Parameter "na_rep" description should finish with "."

Cannot speak for the rest.

pandas.testing.assert_categorical_equal: Parameter "check_dtype" description should finish with "."
pandas.testing.assert_categorical_equal: Parameter "obj" description should finish with "."
pandas.testing.assert_extension_array_equal: Parameter "left" description should finish with "."
pandas.testing.assert_extension_array_equal: Parameter "right" description should finish with "."
pandas.testing.assert_interval_array_equal: Parameter "obj" description should finish with "."
pandas.testing.assert_sp_array_equal: Parameter "check_fill_value" description should finish with "."
pandas.eval: Parameter "truediv" description should finish with "."
pandas.PeriodIndex: Parameter "freq" description should finish with "."
pandas.core.window.rolling.Rolling.apply: Parameter "engine" description should finish with "."
pandas.core.window.rolling.Rolling.apply: Parameter "engine_kwargs" description should finish with "."
pandas.core.window.expanding.Expanding.apply: Parameter "engine" description should finish with "."
pandas.core.window.expanding.Expanding.apply: Parameter "engine_kwargs" description should finish with "."
pandas.core.groupby.DataFrameGroupBy.corr: Parameter "method" description should finish with "."

[MarcoGorelli]

cool, feel free to any of the remaining ones if you want