Spread out documentation items on PR template

Author: jhollway

.github/pull_request_template.md

@@ -10,11 +10,12 @@ Closes #(issue no.)
 
 # Checklist:
 
-- [ ] I have added tests that prove my fix is effective or that my feature works
 - [ ] The package builds on my OS without issues (please add workstation details)
 - [ ] My changes generate no new warnings
 - [ ] My code follows the style guidelines of this project
 - [ ] I have commented my code, particularly in hard-to-understand areas
-- [ ] I have made corresponding changes to the documentation (.R, NEWS.md)
+- [ ] I have added tests that prove my fix is effective or that my feature works
+- [ ] I have documented any functions or data in an .R script
+- [ ] I have updated NEWS.md
 - [ ] I have bumped the version by the appropriate increment in the DESCRIPTION file (major, minor, patch)
 - [ ] PR checks all pass for latest commit