minor #30319 [Console] Doc Block: More intuitive usage example in ArrayInput. (mattjanssen)

This PR was merged into the 3.4 branch.

Discussion
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[Console] Doc Block: More intuitive usage example in ArrayInput.

Make the ArrayInput doc block example more self-explanatory and less misleading. Show the common use case of having `command`, and replace the confusing `name` argument with something more arbitrary.

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

The current doc block example for `ArrayInput` seems to imply that the command name goes in as `name`, but this is actually just a random argument, named "name", in this case.
```php
new ArrayInput(['name' => 'foo', '--bar' => 'foobar']);
```

It might be more helpful to provide an example that works with Symfony's `Console` component out of the box, as that is a common use case:
```php
new ArrayInput(['command' => 'foo:bar', 'foo' => 'bar', '--bar' => 'foobar']);
```

Commits
-------

0c8d311657 Update usage example in ArrayInput doc block.

src/Symfony/Component/Console/Input/ArrayInput.php

@@ -19,7 +19,7 @@ use Symfony\Component\Console\Exception\InvalidOptionException;
  *
  * Usage:
  *
- *     $input = new ArrayInput(['name' => 'foo', '--bar' => 'foobar']);
+ *     $input = new ArrayInput(['command' => 'foo:bar', 'foo' => 'bar', '--bar' => 'foobar']);
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */