Minor fix

Author: javiereguiluz

setup/upgrade_minor.rst

@@ -45,8 +45,7 @@ are like this:
 
 At the bottom of your ``composer.json`` file, in the ``extra`` block you can
 find a data setting for the symfony version. Make sure to also upgrade
-this one. For instance, update it to ``
-.*`` to upgrade to Symfony 4.4:
+this one. For instance, update it to ``4.4.*`` to upgrade to Symfony 4.4:
 
 .. code-block:: json