Fix closing `<table>` tag in Documentation.md

[GadgetBlaster]

The alignment of these closing tags were preventing the docs from rendering correctly on GitHub and in VS Code's Markdown Preview.

Currently

With the HTML fix

Screen shots are from VS Code's Markdown Preview, but this can also be seen on GitHub (linked above).

Also, thank you for porting this library to JavaScript!

[GadgetBlaster]

Hi @junmer. Possible to get this documentation fix merged?

I'd also like to add a .d.ts file for use in TypeScript. Let me know if this fork is still active and I'll find time to PR that.