minor #4921 Fixes for 2.5 branch (ifdattic)

This PR was merged into the 2.5 branch.

Discussion
----------

Fixes for 2.5 branch

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.5
| Fixed tickets |

Commits
-------

d1de1c8 Fix typo: missing of
fe5d1eb Fix typo: Fabien => World

Author: weaverryan

components/console/changing_default_command.rst

@@ -55,7 +55,7 @@ This will print the following to the command line:
 
 .. code-block:: text
 
-    Hello Fabien
+    Hello World
 
 .. tip::
 

components/console/helpers/questionhelper.rst

@@ -93,7 +93,7 @@ option is the default one.
 If the user enters an invalid string, an error message is shown and the user
 is asked to provide the answer another time, until they enter a valid string
 or reach the maximum number of attempts. The default value for the maximum number
-of attempts is ``null``, which means infinite number attempts. You can define
+of attempts is ``null``, which means infinite number of attempts. You can define
 your own error message using
 :method:`Symfony\\Component\\Console\\Question\\ChoiceQuestion::setErrorMessage`.