Fix missing import in code sample

[Kwack-Kwack]

Hey,

Just noticed a missing import on the code samples, as well as the edit links on the footer being broken. I don't think I can fix the latter. It opens to master branch instead of main branch, but still attempts to open the markdown files rather than the hosted html.

Missing import is fixed. Loving the lib so far :)

[Kwack-Kwack]

I'm guessing the docs also needs to be rebuilt, as whilst the page is fixed in the main branch for the second commit, it's showing the old one (without the import) on the docs page.