hackdoc: link to cs instead of gitweb

Change-Id: Ifca7a63517bceffe7ccc0452474d9d16626486de
diff --git a/devtools/hackdoc/source/source_depotview.go b/devtools/hackdoc/source/source_depotview.go
index 6a256be..a278796 100644
--- a/devtools/hackdoc/source/source_depotview.go
+++ b/devtools/hackdoc/source/source_depotview.go
@@ -113,7 +113,7 @@
 func (s *depotViewSource) WebLinks(fpath string) []WebLink {
 	gitURL := fmt.Sprintf(FlagGitwebURLPattern, s.hash, fpath)
 	links := []WebLink{
-		WebLink{Kind: "gitweb", LinkLabel: s.hash[:16], LinkURL: gitURL},
+		WebLink{Kind: "source", LinkLabel: s.hash[:16], LinkURL: gitURL},
 	}
 
 	if s.change != 0 {