Update PULL_REQUEST_TEMPLATE.md

Fixed typos and made a change for consistency

Author: kydojo

PULL_REQUEST_TEMPLATE.md

@@ -1,4 +1,4 @@
-Each pull request should address a single issue, and have a meaningful title.
+Each pull request should address a single issue and have a meaningful title.
 
 **Description**
 Explain what you have changed, and why.
@@ -15,8 +15,8 @@ Explain what you have changed, and why.
 **Notes**
 - Pull requests must be in English
 - If the PR solves an issue, reference it with a suitable verb and the issue number
-(e.g. fixes <hash>12345
-- Unsolicited PRs will be considered, but there is no guarantee of acceptance
+(e.g. fixes <hash>12345)
+- Unsolicited pull requests will be considered, but there is no guarantee of acceptance
 - Pull requests should be from a feature branch in the contributor's fork of the repository
   to the develop branch of the project repository