Updated contributing link in pull request template

Author: lauraneto

.github/pull_request_template.md

@@ -26,5 +26,5 @@
 <!--- Go over all the following points, and put an `x` in all the boxes that apply.  If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
 
 - [ ] If my change requires a change to the documentation, I have updated the documentation in this pull request.
-- [ ] I have read the **[CONTRIBUTING](<(https://github.com/umbraco/Umbraco.UI/blob/dev/docs/CONTRIBUTING.md)>)** document.
+- [ ] I have read the **[CONTRIBUTING](<(https://github.com/umbraco/Umbraco.UI/blob/v1/contrib/docs/CONTRIBUTING.md)>)** document.
 - [ ] I have added tests to cover my changes.