Document the two Microsoft-signed loader sets and their firmware db requirements, the EfiBootLoader diagnostics registry key, and the BIOS third-party certificates option needed on machines that ship with a 2023-only Secure Boot configuration.
Explain why the Windows Secure Boot certificate rollout does not trigger automatically on system-encrypted machines, how to trigger it via the documented AvailableUpdates registry value, the precautions to take, and the recovery procedures when Secure Boot blocks the boot chain.
Link the page from the System Encryption documentation and the CHM table of contents.
* Documentation: Remove XHTML spec and fix errors
None of the docs follow the XHTML specification, which means
that programs that expect this (such as Gnome Web) as it is advertised
as such, will completely fail to parse it as it is incorrect syntax. So
it is removed.
* Remove .chm files