docs: update URL for sample JIRA task (#389)

* docs(pull_request_template): new sample JIRA task

- JIRA URL has changed.
- XYZ is obviously wrong.
- 1234 could be skipped.

So, use XYZ, to better suggest change.

* style: npx nx format:write

.github/pull_request_template.md

@@ -2,7 +2,7 @@
 
 ## Related
 
-- [TUP-1234](https://jira.tacc.utexas.edu/browse/TUP-1234)
+- [TUP-XYZ](https://tacc-main.atlassian.net/browse/TUP-XYZ)
 
 ## Changes