Add coverage sentence

Signed-off-by: alexey semenyuk <alexsemenyuk88@gmail.com>

Author: alex-semenyuk

.github/pull_request_template.md

@@ -32,6 +32,7 @@ Fixes # <issue_number_here>
 - [ ] My changes generates no new warnings.
 - [ ] My Pull Request title is in format <code>< issue name ></code> eg <code>Added links in the documentation</code>.
 - [ ] I have added tests that prove my fix is effective or that my feature works.
+- [ ] My changes have sufficient code coverage (unit, integration, e2e tests).
 
 <hr>