Make the generated keywords documentation look better

[jesper-friis]

Currently, in the generated keyword documentation the tables are wider than what is shown on the screen. There is a scrollbar at the bottom of the table, but that is inconvenient to use.

Possible ideas for making the tables more readable:

• If we keep generate the tables in Markdown, it is possible to

  • cut out a column
  • change the CSS-template that Markdown is using (see https://www.mkdocs.org/user-guide/customizing-your-theme/)

• Generate the table with html with specified column widths