chore: update contribution guidelines reference

[emmanuel-ferdman]

Name	Link
Resource name here	Resource link here

The PR updates the location of the contribution guidelines reference in PR template.

---

• My item is in the right category
• My item is logically grouped below similar items
• My item's name and description respects the conventions of the list
• My item is awesome
• My item is in line with the Tailwind brand usage guidelines
• I have read and followed the contribution guidelines

[innocenzi]

Good catch, thank you!

[joshmanders]

How long have we had that in the readme like that? 😂

Thanks @emmanuel-ferdman!