Fix Docs pretty __init__.py URLs (#14550)

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>

ultralytics/nn/modules/block.py

@@ -930,6 +930,8 @@ class PSA(nn.Module):
 
 
 class SCDown(nn.Module):
+    """Spatial Channel Downsample (SCDown) module for reducing spatial and channel dimensions."""
+
     def __init__(self, c1, c2, k, s):
         """
         Spatial Channel Downsample (SCDown) module.

ultralytics/nn/modules/head.py

@@ -281,6 +281,8 @@ class Classify(nn.Module):
 
 
 class WorldDetect(Detect):
+    """Head for integrating YOLOv8 detection models with semantic understanding from text embeddings."""
+
     def __init__(self, nc=80, embed=512, with_bn=False, ch=()):
         """Initialize YOLOv8 detection layer with nc classes and layer channels ch."""
         super().__init__(nc, ch)