Update pull_request_template.md

.github/pull_request_template.md

@@ -1,3 +1,6 @@
+<!-- If this is your first PR, please have a look at the Contribution Guidelines (https://github.com/SpecFlowOSS/SpecFlow/blob/master/CONTRIBUTING.md) -->
+
+
 <!--- Describe your changes in detail -->
 
 ## Types of changes
@@ -10,8 +13,12 @@
 ## Checklist:
 
 <!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
+<!-- This checklist is here for you that you didn't forget anything -->
 <!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
-- [ ] I've added tests for my code.
+
+
+
+- [ ] I've added tests for my code. (most of the time mandaory)
+- [ ] I have added an entry to the changelog. (mandatory)
 - [ ] My change requires a change to the documentation.
 - [ ] I have updated the documentation accordingly.
-- [ ] I have added an entry to the changelog