Update doc_template.md (#3887)

Revised template to be more useful

Author: melissahenderson

.github/PULL_REQUEST_TEMPLATE/doc_template.md

@@ -1,18 +1,9 @@
 **Description of changes**
 
 
+**Checklist**
 
-**Required**
-
-- [ ] Used LinkOut component on external links
-- [ ] Reviewed Vale errors and made changes where appropriate
-- [ ] Ran Prettier
-- [ ] Previewed updates in Netlify
-- [ ] Received SME and/or peer approval if updates are significant
-- [ ] Included a "fixes #" comment
-
-**Conditional**
-
-- [ ] Ensured sequence diagrams follow our style guide
-- [ ] Included code samples where appropriate
-- [ ] Updated related READMEs
+- PR title is prefixed with `docs:`
+- PR title or description includes a `fixes #`
+- You've run `pnpm format` and `pnpm lint`
+- You've reviewed Vale errors and made changes where appropriate