Update pr-description regex (#1181)

## Description:

Update pr-description regex to better handle `#` characters in the
description.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

Co-authored-by: Scott Anderson <662325+scottanderson@users.noreply.github.com>

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,5 +1,7 @@
 ## Description:
 
+Describe the PR.
+
 ## Please complete the following:
 
 - [ ] I have added screenshots for all UI updates
@@ -10,4 +12,4 @@
 
 ## Please put your Discord username so you can be contacted if a bug or regression is found:
 
-<DISCORD USERNAME>
+DISCORD_USERNAME