Issue link check doesn't allow multiple spaces

[JoshuaKGoldberg]

Describe the bug

Right now, the compliance check for being linked to an issue only allows one space between the action word and #. But it should allow multiple

To Reproduce
Steps to reproduce the behavior:

1. Send a PR with text like fixes #123 (note the multiple spaces)
2. Get a compliance failure on an issue reference

Workflow File Contents

https://github.com/JoshuaKGoldberg/create-typescript-app/blob/2b79e132ebe995e8b62c9d1b094cca8071060fa3/.github/workflows/compliance.yml

Expected behavior

GitHub supports fixes #123, so this action should too.

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context

Seen in JoshuaKGoldberg/create-typescript-app#1297.