docs: make title linkable

kenjis · kenjis · commit 3b3d679384b3 · 2022-05-04T11:25:06.000+09:00
diff --git a/user_guide_src/source/incoming/routing.rst b/user_guide_src/source/incoming/routing.rst
@@ -693,7 +693,8 @@ CodeIgniter has the following :doc:`command </cli/cli_commands>` to display all
 
 .. _spark-routes:
 
-**routes**
+routes
+======
 
 Displays all routes and filters::
 
