Merge pull request #1069 from joshbruce/fix-pr-template-link

Fix relative link in PR Template

.github/PULL_REQUEST_TEMPLATE.md

@@ -16,7 +16,7 @@
   - [ ] Test(s) exist to ensure functionality works (if no new tests added, list which tests cover this functionality).
   - [ ] No tests required for this PR.
 - [ ] Is release:
-  - [ ] Version in `package.json` has been updated (see [RELEASE.md](RELEASE.md)).
+  - [ ] Version in `package.json` has been updated (see [RELEASE.md](https://github.com/markedjs/marked/blob/master/RELEASE.md)).
   - [ ] The `marked.min.js` has been updated; or,
   - [ ] release does not change library.