Docs updates for HUB, YOLOv4, YOLOv7, NAS (#3174)

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

docs/reference/tracker/trackers/basetrack.md

@@ -1,5 +1,6 @@
 ---
 description: 'TrackState: A comprehensive guide to Ultralytics tracker''s BaseTrack for monitoring model performance. Improve your tracking capabilities now!'
+keywords: object detection, object tracking, Ultralytics YOLO, TrackState, workflow improvement
 ---
 
 # TrackState
@@ -10,4 +11,4 @@ description: 'TrackState: A comprehensive guide to Ultralytics tracker''s BaseTr
 # BaseTrack
 ---
 :::ultralytics.tracker.trackers.basetrack.BaseTrack
-<br><br>
+<br><br>

docs/reference/tracker/trackers/bot_sort.md

@@ -1,5 +1,6 @@
 ---
 description: '"Optimize tracking with Ultralytics BOTrack. Easily sort and track bots with BOTSORT. Streamline data collection for improved performance."'
+keywords: BOTrack, Ultralytics YOLO Docs, features, usage
 ---
 
 # BOTrack
@@ -10,4 +11,4 @@ description: '"Optimize tracking with Ultralytics BOTrack. Easily sort and track
 # BOTSORT
 ---
 :::ultralytics.tracker.trackers.bot_sort.BOTSORT
-<br><br>
+<br><br>

docs/reference/tracker/trackers/byte_tracker.md

@@ -1,5 +1,6 @@
 ---
 description: Learn how to track ByteAI model sizes and tips for model optimization with STrack, a byte tracking tool from Ultralytics.
+keywords: Byte Tracker, Ultralytics STrack, application monitoring, bytes sent, bytes received, code examples, setup instructions
 ---
 
 # STrack
@@ -10,4 +11,4 @@ description: Learn how to track ByteAI model sizes and tips for model optimizati
 # BYTETracker
 ---
 :::ultralytics.tracker.trackers.byte_tracker.BYTETracker
-<br><br>
+<br><br>