feat(demo): Updated demo site default values

[DenverCoder1]

Summary

Modified some preview values on the Demo Site.

NOTE: The default values for typing SVGs have not changed, this change only affects the settings on the demo site.

• Font changed from monospace to Fira Code
  • monospace has some issues in that it displays differently depending on the user's browser and can get cut off if the user has a wide monospace font installed. Fira Code is a specific font from Google fonts so should display the same width for all users.
• Pause changed from 500 to 1000, it seems to be a better amount for a noticeable pause.
• Width changed from 400 to 435. This width seems to work well when using Fira Code on the example pangram lines.

Type of change

• Bug fix (added a non-breaking change which fixes an issue)
• New feature (added a non-breaking change which adds functionality)
• Updated documentation (updated the readme, templates, or other repo files)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

How Has This Been Tested?

• Ran tests with composer test
• Added or updated test cases to test new features