docs(readme): fix the installation guide link

[DimplesY]

Please describe the changes this PR makes and why it should be merged:

Status

• [x] Code changes have been tested against prettier, or there are no code changes
• [x] I know how to update typings and have done so, or typings don't need updating

Semantic versioning classification:

• [ ] This PR changes the codebase
  • [ ] This PR includes breaking changes (methods removed or renamed, parameters moved or removed)
  • [ ] This PR changes the internal workings with no modifications to the external API (bug fixes, performance improvements)
• [x] This PR only includes non-code changes, like changes to documentation, README, etc.

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