Added Battle Royale Link to Communication Channels

[hideandsiek]

Description of Change

Added Battle Royale Link to Communication Channels

Link To Issue

#182

How to test this change

Go to Dashboard and click on the USP Battle Royale button to check if the invite link to Battle Royale works.

Checklists

Checklist for developer of feature

• I have performed a code review on my own code
• I have tested my code against the Travis CI, and it has passed.
• I have linked to the appropriate issue on GitHub
• I have written an appropriate description for this PR.
• I have written how to test this PR.

Checklist for reviewers

• I have reviewed the new code
• I have followed the given steps to test the PR, and it passes.