Docstrings arguments cleanup (#3229)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

docs/reference/yolo/v8/detect/predict.md

@@ -3,12 +3,12 @@ description: Detect and predict objects in images and videos using the Ultralyti
 keywords: detectionpredictor, ultralytics yolo, object detection, neural network, machine learning
 ---
 
-# DetectionPredictor
+## DetectionPredictor
 ---
-:::ultralytics.yolo.v8.detect.predict.DetectionPredictor
+### ::: ultralytics.yolo.v8.detect.predict.DetectionPredictor
 <br><br>
 
-# predict
+## predict
 ---
-:::ultralytics.yolo.v8.detect.predict.predict
+### ::: ultralytics.yolo.v8.detect.predict.predict
 <br><br>

docs/reference/yolo/v8/detect/train.md

@@ -3,12 +3,12 @@ description: Train and optimize custom object detection models with Ultralytics
 keywords: DetectionTrainer, Ultralytics YOLO, custom object detection, train models, AI applications
 ---
 
-# DetectionTrainer
+## DetectionTrainer
 ---
-:::ultralytics.yolo.v8.detect.train.DetectionTrainer
+### ::: ultralytics.yolo.v8.detect.train.DetectionTrainer
 <br><br>
 
-# train
+## train
 ---
-:::ultralytics.yolo.v8.detect.train.train
+### ::: ultralytics.yolo.v8.detect.train.train
 <br><br>

docs/reference/yolo/v8/detect/val.md

@@ -3,12 +3,12 @@ description: Validate YOLOv5 detections using this PyTorch module. Ensure model
 keywords: detection, validator, YOLOv5, object detection, model improvement, Ultralytics Docs
 ---
 
-# DetectionValidator
+## DetectionValidator
 ---
-:::ultralytics.yolo.v8.detect.val.DetectionValidator
+### ::: ultralytics.yolo.v8.detect.val.DetectionValidator
 <br><br>
 
-# val
+## val
 ---
-:::ultralytics.yolo.v8.detect.val.val
+### ::: ultralytics.yolo.v8.detect.val.val
 <br><br>