update PR template (#756)

* update PR template

Author: Chris Cho

.github/pull_request_template.md

@@ -1,7 +1,19 @@
 ## Pull Request Info
 
 ### Issue JIRA link:
-https://jira.mongodb.org/browse/DOCSP-NNNN
+https://jira.mongodb.org/browse/DOCSP-NNNNN
+
+### Snooty build log:
+**Paste your workerpool job link here**
 
 ### Docs staging link (requires sign-in on MongoDB Corp SSO):
-https://docs-mongodborg-staging.corp.mongodb.com/ecosystem/docsworker/NNNN/index.html
+https://docs-mongodborg-staging.corp.mongodb.com/ecosystem/docsworker/NNNNN/index.html
+
+### Self-Review Checklist
+
+- [ ] Is this free of any warnings or errors in the RST?
+- [ ] Did you run a spell-check?
+- [ ] Did you run a grammar-check?
+- [ ] Does it render on staging correctly?
+- [ ] Are all the links working?
+- [ ] Are the staging and workerpool job links in the PR description updated?