[Training/Learn] Link Git prerequisite to Git install instructions

[saragibby]

Update Training/Learn

Reporting issue: #19
Learn page to be updated: https://learn.microsoft.com/en-us/training/modules/publish-app-service-static-web-app-api/
Learn page markdown file: https://github.com/MicrosoftDocs/learn-pr/blob/live/learn-pr/azure/publish-app-service-static-web-app-api/index.yml

Prerequisites

• VS Code installed locally
• Learn Authoring Pack for VS Code extensions added to local VS Code instance

Task

Currently, there is a prererquisite listed for Node.js and Git that only links to Node.js instructions.

Update this for only "Node.js LTS" to link to Node.js install instructions and "Git" to be linked to https://learn.microsoft.com/en-us/devops/develop/git/install-and-set-up-git