Fix docs typos in callbacks.py (#12750)

* Update callbacks.py

Signed-off-by: imyhxy <imyhxy@gmail.com>

* Update general.py

Signed-off-by: imyhxy <imyhxy@gmail.com>

---------

Signed-off-by: imyhxy <imyhxy@gmail.com>

utils/callbacks.py

@@ -5,7 +5,7 @@ import threading
 
 
 class Callbacks:
-    """" Handles all registered callbacks for YOLOv5 Hooks."""
+    """Handles all registered callbacks for YOLOv5 Hooks."""
 
     def __init__(self):
         # Define the available callbacks
@@ -47,7 +47,7 @@ class Callbacks:
 
     def get_registered_actions(self, hook=None):
         """
-        " Returns all the registered actions by callback hook.
+        Returns all the registered actions by callback hook.
 
         Args:
             hook: The name of the hook to check, defaults to all

utils/general.py

@@ -34,7 +34,7 @@ import torch
 import torchvision
 import yaml
 
-# Import 'ultralytics' package or install if if missing
+# Import 'ultralytics' package or install if missing
 try:
     import ultralytics