readme: fix model name

README.md

@@ -30,7 +30,7 @@ With Transformers >= 4.3 our German Europeana ConvBERT model can be loaded like:
 ```python
 from transformers import AutoModel, AutoTokenizer
 
-model_name = "convbert-base-german-europeana-cased"
+model_name = "dbmdz/convbert-base-german-europeana-cased"
 
 tokenizer = AutoTokenizer.from_pretrained(model_name)
 model = AutoModel.from_pretrained(model_name)