ultralytics 8.0.42 DDP fix and Docs updates (#1065)

Co-authored-by: Laughing <61612323+Laughing-q@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
Co-authored-by: Noobtoss <96134731+Noobtoss@users.noreply.github.com>
Co-authored-by: Laughing-q <1185102784@qq.com>

ultralytics/tracker/trackers/__init__.py

@@ -1,2 +1,4 @@
+# Ultralytics YOLO 🚀, GPL-3.0 license
+
 from .bot_sort import BOTSORT
 from .byte_tracker import BYTETracker

ultralytics/tracker/trackers/basetrack.py

@@ -1,3 +1,5 @@
+# Ultralytics YOLO 🚀, GPL-3.0 license
+
 from collections import OrderedDict
 
 import numpy as np

ultralytics/tracker/trackers/bot_sort.py

@@ -1,3 +1,5 @@
+# Ultralytics YOLO 🚀, GPL-3.0 license
+
 from collections import deque
 
 import numpy as np
@@ -97,7 +99,7 @@ class BOTSORT(BYTETracker):
         self.appearance_thresh = args.appearance_thresh
 
         if args.with_reid:
-            # haven't supported bot-sort(reid) yet
+            # haven't supported BoT-SORT(reid) yet
             self.encoder = None
         # self.gmc = GMC(method=args.cmc_method, verbose=[args.name, args.ablation])
         self.gmc = GMC(method=args.cmc_method)

ultralytics/tracker/trackers/byte_tracker.py

@@ -1,3 +1,5 @@
+# Ultralytics YOLO 🚀, GPL-3.0 license
+
 import numpy as np
 
 from ..utils import matching