package/ca-certificates: update the upstream URL in Config.in

Update the upstream URL in the help text in Config.in. This
addresses the 'Invalid(404)' URL status in the package stats
web page output.

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/ca-certificates/Config.in

@@ -9,4 +9,4 @@ config BR2_PACKAGE_CA_CERTIFICATES
 	  Debian infrastructure and those shipped with Mozilla's
 	  browsers.
 
-	  http://anonscm.debian.org/gitweb/?p=collab-maint/ca-certificates.git
+	  https://salsa.debian.org/debian/ca-certificates