Nomad changes

docs/snippets/elixir/utils/keyword_extraction_example.md

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+<!-- snippet:syntax-only -->
+
+```elixir
+config_json =
+  Jason.encode!(%{
+    "keywords" => %{
+      "algorithm" => "yake",
+      "max_keywords" => 10,
+      "min_score" => 0.3
+    }
+  })
+
+{:ok, json} = Kreuzberg.extract_file_async("research_paper.pdf", nil, config_json)
+result = Jason.decode!(json)
+
+for keyword <- result["extracted_keywords"] || [] do
+  text = keyword["text"] || ""
+  score = keyword["score"] || 0.0
+  IO.puts("#{text}: #{:io_lib.format("~.3f", [score])}")
+end
+```