Update PULL_REQUEST_TEMPLATE.md

.github/PULL_REQUEST_TEMPLATE.md

@@ -3,7 +3,10 @@
 <!--
 Please include a summary of the change. Screenshots and / or videos can also be helpful if appropriate.
 
-New service widgets should include example(s) of relevant relevant API output as well as a PR to the docs for the new widget. See the development guidelines for new widgets: https://gethomepage.dev/en/more/development/#service-widget-guidelines
+*** Please see the development guidelines for new widgets: https://gethomepage.dev/en/more/development/#service-widget-guidelines
+*** If you do not follow these guidelines your PR will likely be closed without review.
+
+New service widgets should include example(s) of relevant relevant API output as well as a PR to the docs for the new widget.
 -->
 
 Closes # (issue)
@@ -22,5 +25,6 @@ What type of change does your PR introduce to Homepage?
 ## Checklist:
 
 - [ ] If adding a service widget or a change that requires it, I have added a corresponding PR to the [documentation](https://github.com/benphelps/homepage-docs) here: 
+- [ ] If adding a new widget I have reviewed the [guidelines](https://gethomepage.dev/en/more/development/#service-widget-guidelines).
 - [ ] If applicable, I have checked that all tests pass with e.g. `pnpm lint`.
 - [ ] If applicable, I have tested my code for new features & regressions on both mobile & desktop devices, using the latest version of major browsers.