minor symfony#9884 Fixed typo (ddegasperi)

This PR was submitted for the 4.1 branch but it was merged into the 2.8 branch instead (closes symfony#9884).

Discussion
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Fixed typo

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Commits
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ccb0e43 Fixed typo

Author: javiereguiluz

console/input.rst

@@ -257,7 +257,7 @@ To solve this issue, you have to set the option's default value to ``false``::
 
 Now check the value of the option and keep in mind that ``false !== null``::
 
-    $optionValue = $input->getOptions('yell');
+    $optionValue = $input->getOption('yell');
     $yell = ($optionValue !== false);
     $yellLouder = ($optionValue === 'louder');