hackdoc: link to cs instead of gitweb

Change-Id: Ifca7a63517bceffe7ccc0452474d9d16626486de
diff --git a/devtools/hackdoc/source/source.go b/devtools/hackdoc/source/source.go
index 73d8990..71dc3a5 100644
--- a/devtools/hackdoc/source/source.go
+++ b/devtools/hackdoc/source/source.go
@@ -3,7 +3,7 @@
 import "context"
 
 var (
-	FlagGitwebURLPattern = "https://gerrit.hackerspace.pl/plugins/gitiles/hscloud/+/%s/%s"
+	FlagGitwebURLPattern = "https://cs.hackerspace.pl/hscloud@%s/-/blob/%s"
 )
 
 type Source interface {