Nomad changes

docs/snippets/elixir/advanced/chunking_rag.md

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+```elixir title="Elixir"
+config_json = Jason.encode!(%{
+  "chunking" => %{
+    "enabled" => true,
+    "max_characters" => 512,
+    "overlap" => 50,
+    "respect_boundaries" => true
+  }
+})
+
+{:ok, result} = Kreuzberg.extract_file_sync("document.pdf", "application/pdf", config_json)
+
+# Prepare chunks for vector embedding and search
+chunks_for_embedding = result.chunks
+  |> Enum.map(fn chunk ->
+    %{
+      "id" => chunk["id"],
+      "content" => chunk["content"],
+      "metadata" => %{
+        "page" => chunk["page"],
+        "source" => "document.pdf"
+      }
+    }
+  end)
+
+IO.inspect(chunks_for_embedding, label: "Chunks Ready for RAG")
+```