Embed Figma in Markdown

You can embed a Figma prototype in MarfeelDocs.

Create a codeblock, name it figma, and paste the prototype URL!

```figma
https://www.figma.com/file/LKQ4FJ4bTnCSjedbRpk931/Sample-File
```

Expected result:

If you paste an invalid Figma URL, an error message appears instead:

```figma
https://www.figma.com/file/Sample-File
```

Invalid Figma link result:

Figma Prototype not found

A Figma prototype should be here, but the URL wasn't recognized. 😦

Ask the author of this document to update it!