Update masOS guide link
MODIFY
WalletWasabi.Backend/wwwroot/index.html
WalletWasabi.Backend/wwwroot/index.html
<!-- macOS Signature Link -->
<a href="https://github.com/zkSNACKs/WalletWasabi/releases/download/v1.1.9.2/Wasabi-1.1.9.2.dmg.asc" class="text-uppercase">Signature</a>&nbsp;/
<!-- macOS Installation Guide Link -->
- <a href="https://docs.wasabiwallet.io/using-wasabi/InstallPackage.html#osx" class="text-uppercase">Guide</a>
+ <a href="https://docs.wasabiwallet.io/using-wasabi/InstallPackage.html#macos" class="text-uppercase">Guide</a>
</small>
</div>
</div>

Update masOS guide link