Broken README links after Nx 15 Website update

[ajitzero]

nx-examples/README.md

Line 13 in c8ebc44

[30-minute video showing all Nx features](https://nx.dev/getting-started/what-is-nx)

I'm not sure about which video this might be linked to, should be available in Git history. Found this from YouTube: https://www.youtube.com/watch?v=XZpp52IqD2A

This video is 3 years old at this point so possibly can be replaced or skipped entirely.

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nx-examples/README.md

Line 15 in c8ebc44

[Interactive Tutorial](https://nx.dev/tutorial/01-create-application)

This page one does not (?) exist anymore, possibly replaced by https://nx.dev/getting-started/intro where users can pick between different tutorials:

• package-based
• integrated repo
• add to existing repo.

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nx-examples/README.md

Line 102 in c8ebc44

[Computation Caching with NX](https://nx.dev/latest/core-concepts/computation-caching)

This link can possibly be replaced with https://nx.dev/concepts/how-caching-works

[ajitzero]

I can take this up if we can confirm which links should replace the existing ones, and if there is any other link to be added/removed here.