Update README.md

README.md

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 ## Deprecation Notice (August 24, 2025)
 
-This model is **deprecated**. A **newer, larger, and better-performing model** is **now available**, achieving a **test set word error rate of 6.5%**, a significant improvement compared to this repository’s model with a 15.08% word error rate.
+This model is **deprecated**. A **newer, larger, and better-performing model** is **now available**, achieving a **test set Word Error Rate (WER) of 6.5%**, a significant improvement compared to this repository’s model with a 15.08% WER.
 
 [View the updated model on Hugging Face](https://huggingface.co/jacktol/whisper-large-v3-finetuned-for-ATC)