Add npm as prerequisite in README

[3t8]

Fixes Issue

Closes #63

🚀 Changes proposed

Added npm as a prerequisite and fixed typo

Code of Conduct

• [x] By submitting this pull request, I confirm I've read and complied with the CoC 🖖

Check List (Check all the applicable boxes)

• [x] My code follows the code style of this project.
• [ ] My change requires changes to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] All new and existing tests passed.
• [x] This PR does not contain plagiarized content.
• [x] The title of my pull request is a short description of the requested changes.

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Name	Status	Preview	Updated
cs-space	❌ Failed (Inspect)		Oct 17, 2022 at 7:40PM (UTC)