I'm using Quartus Prime Pro Edition, version 20.2.0 Build 50 06/11/2020 SC Pro Edition with "Patches installed: 0.27fw".
When in the Platform Designer I select the IP "SPI Slave to Avalon Master Bridge Intel FPGA IP" and click on "Documentation" and then "User Guide", my browser reports a broken link.
Attached see screen shot showing the link address.
Presumably, the link to the User Guide goes to "documentation.altera.com/....." but that host name no longer exists.
I believe it is several years since Altera was acquired by Intel, so all links to user guides and release notes should be updated.
The link is redirected to Embedded Peripherals IP User Guide
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