Update pull_request_template.md

this commit adresses remarks of the review of @peterstadler

refs #436

.github/pull_request_template.md

@@ -20,9 +20,8 @@ Refs #
 ## Overview
 <!--- Go over all the following points, and DELETE options that are not relevant. -->
 <!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
-- My change requires a change to the documentation.
-- I have updated the documentation accordingly.
-- I have performed a self-review of my code
+- I have updated the inline documentation accordingly.
+- I have performed a self-review of my code, according to the [style guide](https://github.com/Edirom/Edirom-Online/blob/develop/STYLE-GUIDE.md)
 - I have read the [CONTRIBUTING](https://github.com/Edirom/Edirom-Online/blob/develop/CONTRIBUTING.md) document.
-- I have added tests to cover my changes.
-<!--- - All new and existing tests passed. -->
+- I have added tests to cover my changes at [testing](https://github.com/Edirom/Edirom-Online/tree/develop/testing)
+- All new and existing tests passed.