update 3 more URLs to point to salsa

Signed-off-by: Holger Levsen <holger@layer-acht.org>

CONTRIBUTING

@@ -12,7 +12,7 @@ The BTS will ensure the developers' mailing list
    qa-jenkins-dev@lists.debian.org
 is notified.
 
-The code is available in the link:https://anonscm.debian.org/git/qa/jenkins.debian.net.git/tree/[jenkins.debian.net.git repository].
+The code is available in the link:https://salsa.debian.org/qa/jenkins.debian.net[jenkins.debian.net GIT repository].
 
 Patches can be submitted as requests to pull from a publicly-visible 
 git repository (this is the preferred way) communicated via IRC or mail,
@@ -24,7 +24,7 @@ or to the tracking bug: <bugnumber>@bugs.debian.org.
 
 One possible workflow:
 ----
-  git clone git://anonscm.debian.org/qa/jenkins.debian.net.git
+  git clone https://salsa.debian.org/qa/jenkins.debian.net
   git checkout origin/master -b <topicname>
   # <edits>
   git commit -a

debian/control

@@ -6,7 +6,7 @@ Build-Depends: debhelper (>= 9.20120419~), asciidoc
 Standards-Version: 3.9.1
 Homepage: https://jenkins.debian.net/userContent/about.html
 Vcs-Git: https://salsa.debian.org/qa/jenkins.debian.net
-Vcs-Browser: https://anonscm.debian.org/git/qa/jenkins.debian.net.git
+Vcs-Browser: https://salsa.debian.org/qa/jenkins.debian.net
 
 Package: jenkins.debian.net-setup
 Architecture: all