Nomad changes

docs/snippets/csharp/utils/keyword_extraction_example.md

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+```csharp title="C#"
+using Kreuzberg;
+
+var config = new ExtractionConfig
+{
+    Keywords = new KeywordConfig
+    {
+        Algorithm = KeywordAlgorithm.YAKE,
+        MaxKeywords = 10,
+        MinScore = 0.3f,
+    },
+};
+
+var result = await KreuzbergLib.ExtractFile("research_paper.pdf", null, config);
+
+foreach (var keyword in result.ExtractedKeywords ?? new List<Keyword>())
+{
+    Console.WriteLine($"{keyword.Text}: {keyword.Score:F3}");
+}
+```