typo, missing period on the About page

[KameronKerger]

Describe the bug After the sign up sentence, there is a missing period. see screenshot

To Reproduce Steps to reproduce the behavior:

1. Go to 'About'
2. Scroll down to 'sign-up sentence'
3. See error

Expected behavior Add a period at the end of the sentence.

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

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here.

[vim-usds]

@KameronKerger - done