docs: Improve PR template

Author: Panquesito7

.github/pull_request_template.md

@@ -1,20 +1,20 @@
-#### Description of Change
+#### Description of the change
 <!--
 Thank you for your Pull Request. Please provide a description above and review
 the requirements below.
 
 Contributors guide: https://github.com/web3community/devprotocol.xyz/CONTRIBUTING.md
 -->
 
-fixes #ISSUE_NO
+<!-- If it fixes an issue, please add Closes #issue_no below with its respective issue number -->
 
 #### Checklist
+
 <!-- Remove items that do not apply. For completed items, change [ ] to [x]. -->
 
-- [ ] Added description of change
-- [ ] Added tests and example, test must pass
+- [ ] Added description of the change
 - [ ] I've read the [contributing guidelines](https://github.com/web3community/devprotocol.xyz/blob/master/CONTRIBUTING.md)
-- [ ] Search previous suggestions before making a new one, as yours may be a duplicate.
+- [ ] Search previous suggestions before making a new PR, as yours may be a duplicate.
 - [ ] I acknowledge that all my contributions will be made under the project's license.
 
-Notes: <!-- Please add a one-line description for developers or pull request viewers -->
+Notes (**optional**): <!-- Please add a one-line description for developers or pull request viewers -->