ikiwiki-cgi.setup: point history & diff URLs to Salsa.

I.e. synchronize with the ikiwiki configuration used by our production website.

ikiwiki-cgi.setup

@@ -135,9 +135,9 @@ allow_symlinks_before_srcdir: 1
 # unix users whose commits should be checked by the pre-receive hook
 #untrusted_committers: []
 # gitweb url to show file history ([[file]] substituted)
-historyurl: 'https://git-tails.immerda.ch/tails/log/wiki/src/[[file]]'
+historyurl: 'https://salsa.debian.org/tails-team/tails/commits/master/wiki/src/[[file]]'
 # gitweb url to show a diff ([[file]], [[sha1_to]], [[sha1_from]], [[sha1_commit]], and [[sha1_parent]] substituted)
-diffurl: 'https://git-tails.immerda.ch/tails/commit/wiki/src/[[file]]?id=[[sha1_commit]]'
+diffurl: 'https://salsa.debian.org/tails-team/tails/commit/[[sha1_commit]]'
 # where to pull and push changes (set to empty string to disable)
 gitorigin_branch: ''
 # branch that the wiki is stored in