fix: refactor import statement and format model path for readability

app/services/wav2vec2_detector.py

@@ -9,7 +9,7 @@ model file is not available.
 from __future__ import annotations
 
 import io
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from pathlib import Path
 from typing import Optional, Union
 
@@ -19,7 +19,9 @@ from .logging_config import get_logger
 
 logger = get_logger(__name__)
 
-_MODEL_PATH = Path(__file__).resolve().parents[2] / "models" / "wav2vec2_auris_v1.pt"
+_MODEL_PATH = (
+    Path(__file__).resolve().parents[2] / "models" / "wav2vec2_auris_v1.pt"
+)
 _SAMPLE_RATE = 16000
 _MAX_SEC = 30.0