Fix Docs reference section __init__.py URLs (#4168)

ultralytics/cfg/__init__.py

@@ -222,7 +222,7 @@ def handle_yolo_hub(args: List[str]) -> None:
         args (List[str]): A list of command line arguments
 
     Example:
-        ```python
+        ```bash
         python my_script.py hub login your_api_key
         ```
     """
@@ -248,7 +248,7 @@ def handle_yolo_settings(args: List[str]) -> None:
         args (List[str]): A list of command line arguments for YOLO settings management.
 
     Example:
-        ```python
+        ```bash
         python my_script.py yolo settings reset
         ```
     """

ultralytics/hub/__init__.py

@@ -18,6 +18,7 @@ def login(api_key=''):
     Example:
         ```python
         from ultralytics import hub
+
         hub.login('API_KEY')
         ```
     """
@@ -31,6 +32,7 @@ def logout():
     Example:
         ```python
         from ultralytics import hub
+
         hub.logout()
         ```
     """

ultralytics/utils/ops.py

@@ -62,6 +62,8 @@ def coco80_to_coco91_class():  #
 
     Example:
         ```python
+        import numpy as np
+
         a = np.loadtxt('data/coco.names', dtype='str', delimiter='\n')
         b = np.loadtxt('data/coco_paper.names', dtype='str', delimiter='\n')
         x1 = [list(a[i] == b).index(True) + 1 for i in range(80)]  # darknet to coco