Nomad changes

docs/snippets/python/utils/image_preprocessing.md

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+```python title="Python"
+import asyncio
+from kreuzberg import (
+    ExtractionConfig,
+    OcrConfig,
+    TesseractConfig,
+    ImagePreprocessingConfig,
+    extract_file,
+)
+
+async def main() -> None:
+    config: ExtractionConfig = ExtractionConfig(
+        ocr=OcrConfig(
+            tesseract_config=TesseractConfig(
+                preprocessing=ImagePreprocessingConfig(
+                    target_dpi=300,
+                    denoise=True,
+                    deskew=True,
+                    contrast_enhance=True,
+                    binarization_method="otsu",
+                )
+            )
+        )
+    )
+    result = await extract_file("scanned.pdf", config=config)
+    print(f"Content: {result.content[:100]}")
+
+asyncio.run(main())
+```