add "link to paper coming soon" to README

README.md

@@ -16,7 +16,7 @@ For each document, we calculated a combined educational quality score by taking
 
 We trained Aleph-Alpha-GermanWeb-Quality-Classifier-BERT using up to 75,000 documents from each class. We used 95% of this dataset for training to predict the one to five scores. The model achieved an overall accuracy of 42% and a macro-average accuracy of 46% when evaluated on the remaining 5% of the data, which served as the validation set.
 
-Further details, including our LLM judging prompt, can be found in our [accompanying paper](arXiv link).
+Further details, including our LLM judging prompt, can be found in our accompanying paper (link to paper coming soon).
 
 ## Example Snippet