Merge pull request #823 from gchq/docs/new_pr_template

docs: update PR template

.github/pull_request_template.md

@@ -1,6 +1,6 @@
 ### PR Type
 <!--
-    What kind of change does this PR introduce? Remove any that do not apply.
+    What kind of change does this PR introduce? Delete any that do not apply.
 -->
 
 - Bugfix
@@ -14,41 +14,32 @@
 
 ### Description
 <!--
-    Please include a summary of the changes and the related issue. Please also include relevant motivation and context.
+    Summarise the changes and the related issue. Include relevant motivation and context. Include screenshots if useful.
 -->
 
-(Write your answer here.)
 
 ### How Has This Been Tested?
 <!--
-    Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration.
+    Describe the tests that you ran to verify the changes. List any relevant details for your test configuration.
 -->
 
- Test A: (Write your answer here.)
- Test B: (Write your answer here.)
- Test C: (Write your answer here.)
+Existing tests pass as expected.
+
+New tests introduced with this change verify that...
 
 ### Does this PR introduce a breaking change?
 <!--
     What changes might users need to make in their application due to this PR?.
 -->
 
-(Write your answer here.)
-
-### Screenshots
-<!--
-    Include the before and after if your changes include differences in HTML/CSS
--->
-
-(Write your answer here.)
 
 ### Checklist before requesting a review
 - [ ] I have made sure that my PR is not a duplicate.
 - [ ] My code follows the style guidelines of this project.
-- [ ] I have commented my code, particularly in hard-to-understand areas.
+- [ ] I have ensured my code is easy to understand, including docstrings and comments where necessary.
 - [ ] I have performed a self-review of my code.
 - [ ] I have made corresponding changes to the documentation.
 - [ ] My changes generate no new warnings.
-- [ ] I have added tests that prove my fix is effective or that my feature works.
 - [ ] New and existing unit tests pass locally with my changes.
 - [ ] Any dependent changes have been merged and published in downstream modules.
+- [ ] I have updated CHANGELOG.md, if appropriate.