minor symfony#27849 [DomCrawler] Fix ChoiceFormField::select() PHPDoc (dunglas)

This PR was merged into the 2.8 branch.

Discussion
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[DomCrawler] Fix ChoiceFormField::select() PHPDoc

| Q             | A
| ------------- | ---
| Branch?       | 2.8
| Bug fix?      | no
| New feature?  | no <!-- don't forget to update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- don't forget to update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

It's allowed by `setValue`, it works, and it makes sense for `<select multiple>` fields.

Commits
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154ce9c [DomCrawler] Fix ChoiceFormField::select() PHPDoc

Author: fabpot

src/Symfony/Component/DomCrawler/Field/ChoiceFormField.php

@@ -75,7 +75,7 @@ public function isDisabled()
     /**
      * Sets the value of the field.
      *
-     * @param string $value The value of the field
+     * @param string|array $value The value of the field
      */
     public function select($value)
     {