Respect Preferred Color Scheme on Website #4864

FEATURE REQUEST

1. Please describe the feature you are requesting.

The docosaurus website should respect the color scheme (light/dark mode) preferred by the user.

2. Indicate the importance of this issue to you (blocker, must-have, should-have, nice-to-have).
   Are you currently using any workarounds to address this issue?

Not important, will submit a PR in a second.

3. Provide any additional detail on your proposed use case for this feature.

Super small config change in the docosaurus for the website.
See https://docusaurus.io/docs/api/themes/configuration#respectPrefersColorScheme