Converted markdown table has no divider row below the column header, making it an invalid markdown table

[tlyim]

Hi @Elijas ,

I modified this example notebook:

https://github.com/Elijas/sec-parser-exploration/blob/main/00_mdna.ipynb

to replace the command to get just a table summary with one to get a converted markdown table (see the screenshot below):

I noticed that unlike a valid markdown table, the divider row below the column header rows was missing.

Questions:

1. Is this a design feature intended to make it easier to turn the markdown table into a pandas dataframe?
2. Can a flag be easily added to .table_to_markdown() to turn this no-divider feature off and on?
3. Is there a builit-in function in the package to get a pandas dataframe from the (invalid) markdown table?

Look forward to your advice. Thanks.