Nomad changes

docs/snippets/php/advanced/keyword_extraction_config.md

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+```php title="PHP"
+<?php
+declare(strict_types=1);
+
+use Kreuzberg\Kreuzberg;
+use Kreuzberg\ExtractionConfig;
+use Kreuzberg\KeywordConfig;
+
+$config = new ExtractionConfig(
+    keywords: new KeywordConfig(
+        algorithm: 'yake',
+        maxKeywords: 10,
+        minScore: 0.1,
+        language: 'en'
+    )
+);
+
+$result = Kreuzberg::extractFileSync('document.pdf', null, $config);
+
+if ($result->getKeywords()) {
+    foreach ($result->getKeywords() as $keyword) {
+        echo $keyword . "\n";
+    }
+}
+?>
+```