minor #50418 [Console] Fix PHP Doc of InputArgument (lyrixx)

This PR was merged into the 5.4 branch.

Discussion
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[Console] Fix PHP Doc of InputArgument

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       |
| License       | MIT
| Doc PR        |

Commits
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f09d08c34c [Console] Fix PHP Doc of InputArgument

Input/InputArgument.php

@@ -32,7 +32,7 @@ class InputArgument
 
     /**
      * @param string                           $name        The argument name
-     * @param int|null                         $mode        The argument mode: self::REQUIRED or self::OPTIONAL
+     * @param int|null                         $mode        The argument mode: a bit mask of self::REQUIRED, self::OPTIONAL and self::IS_ARRAY
      * @param string                           $description A description text
      * @param string|bool|int|float|array|null $default     The default value (for self::OPTIONAL mode only)
      *