Update Jazzy.rst

Signed-off-by: Steve Macenski <[email protected]>

migration/Jazzy.rst

@@ -134,17 +134,16 @@ Removed global map_topic from Costmap node
 
 In `PR #4715 <https://github.com/ros-navigation/navigation2/pull/4715>`_ the global `map_topic` parameter has been removed from the `Costmap2DROS` node. This parameterwas only used in the `StaticLayer` and should be defined as a parameter local to the `StaticLayer` instead, for example:
 
-```
-global_costmap:
+.. code-block:: yaml
+
   global_costmap:
-    ros__parameters:
-      [...]
-      # Not supported anymore
-      map_topic: my_map
-      static_layer:
-        plugin: "nav2_costmap_2d::StaticLayer"
-        map_subscribe_transient_local: True
-        # Do this instead
+    global_costmap:
+      ros__parameters:
+        [...]
+        # Not supported anymore
         map_topic: my_map
-
-```
+        static_layer:
+          plugin: "nav2_costmap_2d::StaticLayer"
+          map_subscribe_transient_local: True
+          # Do this instead
+          map_topic: my_map