Update model architecture in README.md

README.md

@@ -31,7 +31,7 @@ Team Name: **DeepLayer**
 ## Our Approach: Best Submission
 
 ### Model Architecture
-During the preparation phase, we pre-trained a Vision Transformer (ViT) on a synthetic dataset of captchas (1M images), with the following architecture:
+During the preparation phase, we pre-trained a Convolutional Vision Transformer on a synthetic dataset of captchas (1M images), with the following architecture:
 
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