chore(docs): update doc links to new URLs

[lizacodes]

Related issue

Fixes #

Description

The Documentation section in the README contains outdated links and redirect to the new home of the CDKTF documentation, with the exception of the link to Examples, which is broken. This PR replaces the links with the new URLs for those pages.

Checklist

• I have updated the PR title to match CDKTF's style guide
• I have run the linter on my code locally
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation if applicable
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works if applicable
• New and existing unit tests pass locally with my changes

[hashicorp-cla]

All committers have signed the CLA.

[ansgarm]

Thank you, @lizacodes 💯

[github-actions]

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