dccp: 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>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dccp/Kconfig b/net/dccp/Kconfig
index 51ac2631..0c7d2f6 100644
--- a/net/dccp/Kconfig
+++ b/net/dccp/Kconfig
@@ -5,7 +5,7 @@
 	help
 	  Datagram Congestion Control Protocol (RFC 4340)
 
-	  From http://www.ietf.org/rfc/rfc4340.txt:
+	  From https://www.ietf.org/rfc/rfc4340.txt:
 
 	  The Datagram Congestion Control Protocol (DCCP) is a transport
 	  protocol that implements bidirectional, unicast connections of