Update PR template to better match new format used across the org

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,29 +1,20 @@
 <!--
-Note: This checklist is a reminder of our shared engineering expectations. Feel free to change it, though reviewer and all items in bold are required.
+Note: This checklist is a reminder of our shared engineering expectations. Feel free to change it, although assigning a GitHub reviewer and the items in bold are required.
 -->
 
-Reviewer:
-Asana:
+Task/Issue URL:
+Tech Design URL:
 CC:
 
 **Description**:
 
 
 **Steps to test this PR**:
-1. <STEP 1>
+1.
+1.
 
 
-###### Reviewer Checklist:
-- [ ] **Ensure the PR solves the problem**
-- [ ] **Review every line of code**
-- [ ] **Ensure the PR does no harm by testing the changes thoroughly**
-- [ ] **Get help if you're uncomfortable with any of the above!**
-- [ ] Determine if there are any quick wins that improve the implementation
-
-
-###### PR DRI Checklist:
-- [ ] Get advice or leverage existing code
-- [ ] Agree on technical approach with reviewer (if the changes are nuanced)
-- [ ] Ensure that there is a testing strategy (and documented non-automated tests)
-- [ ] Ensure there is a documented monitoring strategy (if necessary)
-- [ ] Consider systems implications (Database connections, Grafana stats, CPU)
+---
+###### Internal references:
+[Software Engineering Expectations](https://app.asana.com/0/59792373528535/199064865822552)
+[Technical Design Template](https://app.asana.com/0/59792373528535/184709971311943)