Replace HTTP links with HTTPS ones: documentation

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:
  For each line:
    If doesn't contain `\bxmlns\b`:
      For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
        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/20200526060544.25127-1-grandmaster@al2klimov.de
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/admin-guide/acpi/initrd_table_override.rst

@@ -102,7 +102,7 @@ Where to retrieve userspace tools
 =================================
 
 iasl and acpixtract are part of Intel's ACPICA project:
-http://acpica.org/
+https://acpica.org/
 
 and should be packaged by distributions (for example in the acpica package
 on SUSE).