Broken link fixes (#1537)

docs/tasks/classify.md

@@ -11,7 +11,7 @@ of that class are located or what their exact shape is.
 
     YOLOv8 _classification_ models use the `-cls` suffix, i.e. `yolov8n-cls.pt` and are pretrained on ImageNet.
 
-[Models](https://github.com/ultralytics/ultralytics/tree/main/ultralytics/models/v8/cls){.md-button .md-button--primary}
+[Models](https://github.com/ultralytics/ultralytics/tree/main/ultralytics/models/v8){ .md-button .md-button--primary}
 
 ## Train
 

docs/tasks/segment.md

@@ -11,7 +11,7 @@ segmentation is useful when you need to know not only where objects are in an im
 
     YOLOv8 _segmentation_ models use the `-seg` suffix, i.e. `yolov8n-seg.pt` and are pretrained on COCO.
 
-[Models](https://github.com/ultralytics/ultralytics/tree/main/ultralytics/models/v8/seg){.md-button .md-button--primary}
+[Models](https://github.com/ultralytics/ultralytics/tree/main/ultralytics/models/v8){ .md-button .md-button--primary}
 
 ## Train