[markdown] Create a table without a header in Markdown

If you don't mind wasting a line by leaving it empty, consider the following hack (it is a hack, and use this only if you don't like adding any additional plugins).

| | | |
|-|-|-|
|__Bold Key__| Value1 |
| Normal Key | Value2 |

To view how the above one could look, copy the above and visit https://stackedit.io/editor

It worked with GitLab/GitHub's Markdown implementations.