Chore: Replace Hardcoded Prose Color with Theme Color in Tailwind Config
Chore: Replace Hardcoded Prose Color with Theme Color in Tailwind Config

Because
* Just some tidying.

This commit:
* Replace the hardcoded color for the prose class with its equivalent color in the Tailwind theme object.
* Change h3 font weight to its default of 600 - the heading contains a link which is reducing font weight.

TheOdinProject/theodinproject,TheOdinProject/theodinproject,TheOdinProject/theodinproject,TheOdinProject/theodinproject