Fix curl command formatting in workflow

[EXAEE]

Fixed your discord notifications workflow. I've noticed it wasn't working. Cheers
EXAEETH

Summary

Fixes #9999 (no PR for this issue)

List of files changed and why

no idea which file, you can see it in this PR. Why? Cuz it wasn't working XD

How Has This Been Tested?

It wasn't

Checklist:

• [x ] My code follows the style guidelines of this project
• [x ] I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added/updated unit tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes