minor #20377 [Mercure] Update mercure.rst: Moving tip about debugger upwards (ThomasLandauer)

This PR was merged into the 5.4 branch.

Discussion
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[Mercure] Update mercure.rst: Moving tip about debugger upwards

Page: https://symfony.com/doc/5.x/mercure.html#subscribing

Reason: This belongs to the code block, not to the DevTools screenshot.

Commits
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92cb40e Update mercure.rst: Moving tip about debugger upwards

Author: javiereguiluz

mercure.rst

@@ -306,6 +306,10 @@ as patterns:
     }
     </script>
 
+.. tip::
+
+    Test if a URI Template matches a URL using `the online debugger`_
+
 .. tip::
 
     Google Chrome DevTools natively integrate a `practical UI`_ displaying in live
@@ -321,10 +325,6 @@ as patterns:
     * click on the request to the Mercure hub
     * click on the "EventStream" sub-tab.
 
-.. tip::
-
-    Test if a URI Template match a URL using `the online debugger`_
-
 Discovery
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