add google DNS url to DESCRIPTION per CRAN req

DESCRIPTION

@@ -10,7 +10,8 @@ Description: To address the problem of insecurity of UDP-based DNS requests,
     to provide end-to-end authenticated DNS lookups. Functions that enable
     querying individual requests that bulk requests that return detailed
     responses and bulk requests are both provided. Support for reverse
-    lookups is also provided.
+    lookups is also provided. See <https://developers.google.com/speed/public-dns/docs/dns-over-https> 
+    for more information.
 License: AGPL + file LICENSE
 LazyData: true
 Encoding: UTF-8

R/gdns-package.r

@@ -12,7 +12,10 @@
 #' security between a client and a recursive resolver, and complements DNSSEC
 #' to provide end-to-end authenticated DNS lookups.\cr
 #' \cr
-#' Support for reverse lookups is also provided.
+#' Support for reverse lookups is also provided.\cr
+#' \cr
+#' See \url{https://developers.google.com/speed/public-dns/docs/dns-over-https}
+#' for more information.
 #'
 #' @name gdns
 #' @docType package

man/gdns.Rd

@@ -18,7 +18,10 @@ encrypted HTTPS connection. DNS-over-HTTPS greatly enhances privacy and
 security between a client and a recursive resolver, and complements DNSSEC
 to provide end-to-end authenticated DNS lookups.\cr
 \cr
-Support for reverse lookups is also provided.
+Support for reverse lookups is also provided.\cr
+\cr
+See \url{https://developers.google.com/speed/public-dns/docs/dns-over-https}
+for more information.
 }
 \author{
 Bob Rudis (bob@rud.is)