Link config.json sections to relevant documentation

[chriscerie]

Validations

• [X] I believe this is a way to improve. I'll try to join the Continue Discord for questions
• [X] I'm not able to find an open issue that requests the same enhancement

Problem

Manually navigating to the relevant documentation for config.json sections (e.g., customCommands, contextProviders) takes a nontrivial amount of time.

Solution

The hover text should include links to the relevant documentation.