Card: drop the stale dataset size from the archived-benchmark note

README.md

@@ -127,10 +127,10 @@ same repository.
 
 ### The base model on the whole dataset (archived benchmark)
 
-> These three numbers were measured on the **earlier 100-images-per-type render** of the dataset
-> (4 600 PNG), before the dataset repository was re-uploaded with the 500-per-type render
-> (23 000 PNG) that this model was trained on. They are the base model's numbers, not this
-> repository's, and they were not re-measured on the new render.
+> These three numbers were measured on an **earlier, smaller render** of the dataset
+> (100 images per type), before the dataset repository was re-uploaded with the
+> 500-per-type render (23 000 PNG) that this model was trained on. They are the base
+> model's numbers, not this repository's, and they were not re-measured on the new render.
 
 | measurement | value | source |
 |---|---|---|