minor #9439 routing example, simple table layout fix (snoek09)

This PR was merged into the 2.7 branch.

Discussion
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routing example, simple table layout fix

Bumped into this layout bug while reading the docs.
I think this was supposed to be a table.

Commits
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2505c79 fix for simple table layout

Author: javiereguiluz

routing.rst

@@ -499,12 +499,12 @@ redirect between them.
 Symfony follows this logic to redirect between URLs with and without trailing
 slashes (but only for ``GET`` and ``HEAD`` requests):
 
-----------  ----------------------------------------  ------------------------------------------
+==========  ========================================  ==========================================
 Route path  If the requested URL is ``/foo``          If the requested URL is ``/foo/``
-----------  ----------------------------------------  ------------------------------------------
+==========  ========================================  ==========================================
 ``/foo``    It matches (``200`` status response)      It doesn't match (``404`` status response)
 ``/foo/``   It makes a ``301`` redirect to ``/foo/``  It matches (``200`` status response)
-----------  ----------------------------------------  ------------------------------------------
+==========  ========================================  ==========================================
 
 In summary, adding a trailing slash in the route path is the best way to ensure
 that both URLs work. Read the :doc:`/routing/redirect_trailing_slash` article to