[Chore] Wrong command provided to start the notification server

[juliamuiruri4]

Are you accessing the project from the GitHub Codespaces?

• No, I am running the project on my local machine (I will fill in the OS section below)
• Yes, I am using GitHub Codespaces.

Note: The project is optimized to run on Codespaces. We welcome contributions to enhance it for cross-platform local development, but it's not something we will prioritize right now. Thank you!

Describe the bug
The Readme instructions should be updated from npm run install, to npm install

To Reproduce
Steps to reproduce the behavior:

1. Go to './packages/notifications'
2. Type in command 'npm run install' (as per readme instructions)
3. See error

Expected behavior
npm install to successfully install required packages

Screenshots

OS (please complete the following information):

• OS: Windows
• OS Version:
• npm version:
• Node.js version:
• output of azd version:

Additional context
Add any other context about the problem here.