Fix "Table Definition Files" link

[pdelre]

Small typo with broken markdown

Side note: I'm participating in Hacktoberfest and while this wasn't intended to be a "official" contribution (it's very minor), if you are appreciative of the PR, please feel free to add the hacktoberfest-accepted label to the PR and I will receive credit.

If you're not interested, please enjoy the fix anyway! ❤️ Thanks!