Fix Solidity Docgen Config

[kyzooghost]

Description

When we did the /contracts folder structure rehaul in #420, we did not update the Solidity docgen configuration accordingly. We would like to amend this.

Motivation

Eliminate untracked Markdown files being created by Solidity docgen during the husky hooks.

Tasks

• Update Solidicty docgen configuration

Acceptance criteria

• CI passing

Risks

• Negligible

Remember to

• Add the documentation label in case there is an impact on the documentation
• Add priority and team labels
• Add Task for updating the Runbook or adding/updating existing metrics and alerts.