docs: hid: Convert link to https

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/20200708123613.14368-1-grandmaster@al2klimov.deSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/hid/hiddev.rst

@@ -65,7 +65,7 @@ The HIDDEV API
 ==============
 
 This description should be read in conjunction with the HID
-specification, freely available from http://www.usb.org, and
+specification, freely available from https://www.usb.org, and
 conveniently linked of http://www.linux-usb.org.
 
 The hiddev API uses a read() interface, and a set of ioctl() calls.