docs: update CONTRIBUTING and PR template

Author: olimorris

.github/pull_request_template.md

@@ -15,6 +15,5 @@
 
 ## Checklist
 
-- [ ] I've read the [CONTRIBUTING](https://github.com/olimorris/codecompanion.nvim/blob/main/CONTRIBUTING.md) guidelines and have adhered to them in this PR
-- [ ] I've updated the README
-- [ ] I've ran the `make docs` command
+- [ ] I've read the [contributing](https://github.com/olimorris/codecompanion.nvim/blob/main/CONTRIBUTING.md) guidelines and have adhered to them in this PR
+- [ ] I've updated the README and/or relevant docs pages