docs: improve section title

kenjis · kenjis · commit ebaa5ea4e43b · 2023-06-14T08:15:36.000+09:00
diff --git a/user_guide_src/source/incoming/routing.rst b/user_guide_src/source/incoming/routing.rst
@@ -832,8 +832,8 @@ CodeIgniter has the following :doc:`command </cli/spark_commands>` to display al
 
 .. _routing-spark-routes:
 
-routes
-======
+spark routes
+============
 
 Displays all routes and filters::
 
