minor #18038 Add missing import for LogRecord class in processors code example (timkrase)

This PR was merged into the 6.2 branch.

Discussion
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Add missing import for LogRecord class in processors code example

The code example on the [processors page](https://symfony.com/doc/current/logging/processors.html) uses the "LogRecord" class (starting with Symfony version 6.2) but is missing the corresponding import for the class.

Commits
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ea78a5d Add missing import for LogRecord in processors

Author: OskarStark

logging/processors.rst

@@ -19,6 +19,7 @@ using a processor::
     // src/Logger/SessionRequestProcessor.php
     namespace App\Logger;
 
+    use Monolog\LogRecord;
     use Symfony\Component\HttpFoundation\Exception\SessionNotFoundException;
     use Symfony\Component\HttpFoundation\RequestStack;