Contribute to the docs page looks strange in the menu and index page

[butler54]

https://validatedpatterns.io/contribute/contribute-to-docs/ is a great page, however, the home page you go it from: https://validatedpatterns.io/contribute/ it looks a bit strange

1. the LHS bar just says contributors guide
2. Item in a box has a strange sentence finishing in a colon in it

Ask:

• Change 'Contributors guide' to 'Documentation contributors guide'
• Fix the dangling sentence

[butler54]

Might get to this myself, however, focusing on the coco docs for now.