fix(misc): fix broken link on npm page

[hayawata3626]

Current Behavior

The page link to Tutorial: Adding Nx to an Existing Monorepo is broken.

Expected Behavior

The page link to Tutorial: Adding Nx to an Existing Monorepo works correctly.

Related Issue(s)

Fixes #12750

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✅ Successfully ran 12 targets

• nx-cloud record -- yarn depcheck
• nx affected --target=e2e --base=2f46797535b591122ac05fffe95de84353920b0c --head=01e897a2338b8783a3cf50ad6b9809aba0701f2f --exclude=e2e-storybook,e2e-storybook-angular,e2e-react-native,e2e-detox,e2e-make-angular-cli-faster --parallel=1
• nx-cloud record -- yarn nx workspace-lint
• nx-cloud record -- yarn check-lock-files
• nx affected --target=build --base=2f46797535b591122ac05fffe95de84353920b0c --head=01e897a2338b8783a3cf50ad6b9809aba0701f2f --parallel=3
• nx affected --target=lint --base=2f46797535b591122ac05fffe95de84353920b0c --head=01e897a2338b8783a3cf50ad6b9809aba0701f2f --parallel=3
• nx affected --target=test --base=2f46797535b591122ac05fffe95de84353920b0c --head=01e897a2338b8783a3cf50ad6b9809aba0701f2f --parallel=1
• nx-cloud record -- yarn check-commit
• nx-cloud record -- yarn nx format:check --base=2f46797535b591122ac05fffe95de84353920b0c --head=01e897a2338b8783a3cf50ad6b9809aba0701f2f
• nx-cloud record -- yarn check-imports
• nx-cloud record -- yarn documentation
• nx build typedoc-theme

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1 Ignored Deployment

Name	Status	Preview	Updated
nx-dev	⬜️ Ignored (Inspect)		Oct 22, 2022 at 4:42AM (UTC)

[FrozenPandaz]

Thank you for your contribution! LGTM 🎉

[github-actions]

This pull request has already been merged/closed. If you experience issues related to these changes, please open a new issue referencing this pull request.