Fix doc blocks
minor #10738 [2.4] Fix doc blocks (romainneutron)

This PR was merged into the 2.4 branch.

Discussion
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[2.4] Fix doc blocks

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

this follows #10737

Commits
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c01915d Fix doc blocks
Merge branch '2.4'

* 2.4:
  Little correction for case 'ar'
  No need to use mb functions here
  Fix doc-blocks
  Fix doc blocks
  [HttpFoundation] update phpdoc of SessionHandlerInterface and unify parameters of all handlers according to interface
  [Doctrine Bridge] fix DbalSessionHandler for high concurrency, interface compliance, compatibility with all drivers (oci8, mysqli, pdo with mysql, sqlsrv, sqlite)
  [Finder] Marked test skipped when ftp stream wrapper is not available

Conflicts:
	src/Symfony/Component/Security/Core/Authorization/Voter/ExpressionVoter.php