minor #15298 [Console] Updates method reference for retrieving console helpers (0x346e3730)

This PR was merged into the 4.4 branch.

Discussion
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[Console] Updates method reference for retrieving console helpers

While reading the docs, I've found it weird that the documentation was talking about a `getHelperSet()` method when referencing in the following codeblock the method `getHelper`.

This MR harmonizes the wording according to the [Debug Formatter Helper](https://symfony.com/doc/current/components/console/helpers/debug_formatter.html)

Commits
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f2b7ad9 Updates method reference for retrieving console helpers

Author: javiereguiluz

components/console/helpers/formatterhelper.rst

@@ -9,8 +9,8 @@ You can do more advanced things with this helper than you can in
 :doc:`/console/coloring`.
 
 The :class:`Symfony\\Component\\Console\\Helper\\FormatterHelper` is included
-in the default helper set, which you can get by calling
-:method:`Symfony\\Component\\Console\\Command\\Command::getHelperSet`::
+in the default helper set and you can get it by calling
+:method:`Symfony\\Component\\Console\\Command\\Command::getHelper`::
 
     $formatter = $this->getHelper('formatter');
 

components/console/helpers/questionhelper.rst

@@ -6,8 +6,8 @@ Question Helper
 
 The :class:`Symfony\\Component\\Console\\Helper\\QuestionHelper` provides
 functions to ask the user for more information. It is included in the default
-helper set, which you can get by calling
-:method:`Symfony\\Component\\Console\\Command\\Command::getHelperSet`::
+helper set and you can get it by calling
+:method:`Symfony\\Component\\Console\\Command\\Command::getHelper`::
 
     $helper = $this->getHelper('question');