Fix: Null issue comments and markdown rendering

[IgboPharaoh]

This pr introduces :

• The markdown wrapper component to render body text returned as markdown appropriately
• Introduces a fix for issue comments returning null when trying to fetch the next year's issue comments after the current year.

[vercel]

@IgboPharaoh is attempting to deploy a commit to the btc-knowledge-base Team on Vercel.

A member of the Team first needs to authorize it.