Fix/links to docs learn

[BekahHW]

Description

We've made some updates to the path for docs and intro, and we're phasing out of discord. This makes updates to the links.

Related Tickets & Documents

closes #324

Mobile & Desktop Screenshots/Recordings

Steps to QA

1. Go here: https://deploy-preview-325--opensauced-landing.netlify.app/
2. Check out the footer

Tier (staff will fill in)

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