docs: kvm: Replace HTTP links with HTTPS ones

Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
            If both the HTTP and HTTPS versions
            return 200 OK and serve the same content:
              Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Link: https://lore.kernel.org/r/20200713114719.33839-1-grandmaster@al2klimov.deSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/virt/kvm/amd-memory-encryption.rst

@@ -270,6 +270,6 @@ References
 See [white-paper]_, [api-spec]_, [amd-apm]_ and [kvm-forum]_ for more info.
 
 .. [white-paper] http://amd-dev.wpengine.netdna-cdn.com/wordpress/media/2013/12/AMD_Memory_Encryption_Whitepaper_v7-Public.pdf
-.. [api-spec] http://support.amd.com/TechDocs/55766_SEV-KM_API_Specification.pdf
-.. [amd-apm] http://support.amd.com/TechDocs/24593.pdf (section 15.34)
-.. [kvm-forum]  http://www.linux-kvm.org/images/7/74/02x08A-Thomas_Lendacky-AMDs_Virtualizatoin_Memory_Encryption_Technology.pdf
+.. [api-spec] https://support.amd.com/TechDocs/55766_SEV-KM_API_Specification.pdf
+.. [amd-apm] https://support.amd.com/TechDocs/24593.pdf (section 15.34)
+.. [kvm-forum]  https://www.linux-kvm.org/images/7/74/02x08A-Thomas_Lendacky-AMDs_Virtualizatoin_Memory_Encryption_Technology.pdf

Documentation/virt/kvm/mmu.rst

@@ -480,4 +480,4 @@ Further reading
 ===============
 
 - NPT presentation from KVM Forum 2008
-  http://www.linux-kvm.org/images/c/c8/KvmForum2008%24kdf2008_21.pdf
+  https://www.linux-kvm.org/images/c/c8/KvmForum2008%24kdf2008_21.pdf

Documentation/virt/kvm/nested-vmx.rst

@@ -22,7 +22,7 @@ its implementation and its performance characteristics, in the OSDI 2010 paper
 "The Turtles Project: Design and Implementation of Nested Virtualization",
 available at:
 
-	http://www.usenix.org/events/osdi10/tech/full_papers/Ben-Yehuda.pdf
+	https://www.usenix.org/events/osdi10/tech/full_papers/Ben-Yehuda.pdf
 
 
 Terminology