Identify and update links to How the curriculum works module

[Dedekind561]

Acceptance criteria

• [x] Identify all comms relevant to new volunteers (e.g. emails, presentations etc)
• [ ] Remove reference to old syllabus and link to new module on the curriculum website

Including presentations like this: https://docs.google.com/presentation/d/1B-fgMuZ3wSHFdCnzXrtF0qxvQc07QkcL3OJr0RGC4og/edit#slide=id.g17dc9a1f019_0_269

Owner

@Dedekind561

Stakeholder

@lilianabermudes @MarianaVazquezCYF

Approver

@CodeYourFuture/global-syllabus

[haldenb]

onboarding steps including all presentations https://docs.google.com/document/d/11YoZbTasrQb6lCcDQUSBbpIFr2ruKhGWiefiBDIL9wM/edit

WIP new Presentation https://docs.google.com/presentation/d/1rawXCCKbTj7t0Em48X1vxw3PxSYsVLYwAxDqsOgHsVU/edit#slide=id.g141ca3155bf_0_11

Let me know if you need a moment for me to walk you through anything :)