Update PULL_REQUEST_TEMPLATE.md

Author: jaredwray

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,5 +1,6 @@
 **Please check if the PR fulfills these requirements**
-- [ ] Followed the [Contributing](https://github.com/jaredwray/mockhttp/blob/main/CONTRIBUTING.md) guidelines.
+- [ ] Followed the [Contributing](../blob/main/CONTRIBUTING.md) and [Code of Conduct](../blob/main/CODE_OF_CONDUCT.md) guidelines.
 - [ ] Tests for the changes have been added (for bug fixes/features) with 100% code coverage.
 
 **What kind of change does this PR introduce?** (Bug fix, feature, docs update, ...)
+