minor #17445 [Console] Fix incorrect example for CommandCompletionTester (weitzman)

This PR was merged into the 5.4 branch.

Discussion
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[Console] Fix incorrect example for `CommandCompletionTester`

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Commits
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9f12399 Fix incorrect example for CommandCompletionTester

Author: javiereguiluz

console/input.rst

@@ -397,8 +397,10 @@ to help you unit test the completion logic::
             $this->assertSame(['Fabien', 'Fabrice', 'Wouter'], $suggestions);
 
             // complete the input with "Fa" as input
+            // note that the list does not reduce because the completion tester doesn't run any shell, 
+            // it only tests the PHP part of the completion logic, so it should always include all values
             $suggestions = $tester->complete(['Fa']);
-            $this->assertSame(['Fabien', 'Fabrice'], $suggestions);
+            $this->assertSame(['Fabien', 'Fabrice', 'Wouter'], $suggestions);
         }
     }