Correct what appears to be intended behavior vs actual behavior in documentation

When testing a command with an `InputOption::VALUE_NONE` option, and symfony/console v5.4.15 I have to provide a non-empty value to set the flag to the 'on' value. Perhaps this is changed in a later version?

Author: tomegantcs

console.rst

@@ -565,11 +565,11 @@ call ``setAutoExit(false)`` on it to get the command result in ``CommandTester``
 
 .. caution::
 
-    When testing ``InputOption::VALUE_NONE`` command options, you must pass an
+    When testing ``InputOption::VALUE_NONE`` command options, you must pass a non
     empty value to them::
 
         $commandTester = new CommandTester($command);
-        $commandTester->execute(['--some-option' => '']);
+        $commandTester->execute(['--some-option' => 'true']);
 
 .. note::