Update closing tagline on homepage

[MattIPv4]

Description

Update the copy used in the tagline on the closing homepage.

Test process

Copy shows in the app closing state and makes sense.

Requirements to merge

• [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 in hard-to-understand areas
• [x] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes