gitindex/index.go: fix func name in godoc

Change-Id: I35d0a86e370bab5296873987bde081a476efc404
diff --git a/gitindex/index.go b/gitindex/index.go
index b2500cd..5715406 100644
--- a/gitindex/index.go
+++ b/gitindex/index.go
@@ -252,7 +252,7 @@
 	return nil
 }
 
-// SetTemplates fills in templates based on the origin URL.
+// SetTemplatesFromOrigin fills in templates based on the origin URL.
 func SetTemplatesFromOrigin(desc *zoekt.Repository, u *url.URL) error {
 	desc.Name = filepath.Join(u.Host, strings.TrimSuffix(u.Path, ".git"))