minor #12166 Remove space before self closing XML tag (OskarStark)

This PR was merged into the 4.3 branch.

Discussion
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Remove space before self closing XML tag

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3aae419 Remove space before self closing XML tag

Author: OskarStark

routing.rst

@@ -200,7 +200,7 @@ Use the ``methods`` option to restrict the verbs each route should respond to:
 
     HTML forms only support ``GET`` and ``POST`` methods. If you're calling a
     route with a different method from an HTML form, add a hidden field called
-    ``_method`` with the method to use (e.g. ``<input type="hidden" name="_method" value="PUT" />``).
+    ``_method`` with the method to use (e.g. ``<input type="hidden" name="_method" value="PUT"/>``).
     If you create your forms with :doc:`Symfony Forms </forms>` this is done
     automatically for you.