docs: update training data for traffic light (autowarefoundation#2464)

* update traffic light cnn classifier README.md * correct to upper case Co-authored-by: Daisuke Nishimatsu <[email protected]>
HansRobo · Dec 7, 2022 · 4a75d7c · 4a75d7c
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diff --git a/perception/traffic_light_classifier/README.md b/perception/traffic_light_classifier/README.md
@@ -8,7 +8,8 @@ traffic_light_classifier is a package for classifying traffic light labels using
 
 ### cnn_classifier
 
-Traffic light labels are classified by MobileNetV2.
+Traffic light labels are classified by MobileNetV2.  
+Totally 37600 (26300 for training, 6800 for evaluation and 4500 for test) TIER IV internal images of Japanese traffic lights were used for fine-tuning.
 
 ### hsv_classifier