Some documentation site examples changed with USWDS 3.0

[bryanpizzillo]

Issue description

ESTIMATE TBD

As part of the wide changes for USWDS we had to update the documentation site's index.scss. As such, a number of things were removed causing issues on the font design-tokens page.

• Bad: https://designsystem-dev.cancer.gov/develop/design-tokens/typography/fonts#font-weight-tokens
• Good: https://designsystem-dev.cancer.gov/v1.3.0/design-tokens/typography/fonts#font-weight-tokens

[olitharp-nci]

Bryan and I did some investigating, adding our findings here for whenever we pick this up again

1. Turn on all font utility classes

   $font-palettes: ("palette-font"),
   $font-weight-palettes: ("palette-font-weight"),

2. Add missing imports

   @import 'uswds/dist/scss/packages/usa-table';
   @import './scss/uswds-site.scss';
   @import './scss/markdown-heading';
   @import './scss/inline-code';

   Note the above code was copy pasta'd from v1.3.0 and should be updated with @forwards and you know, correct pathing. Also also, usa-table will need to be added to ncids-css

3. The above uswds-site.scss file was just completely deleted and needs to be brought back -- because apparently when I update things, ripping things out that doesn't seem to be needed brings me joy.