readme: refactor datasets section

README.md

@@ -19,7 +19,7 @@ The Zeitungs-LM is a language model pretrained on historical German newspapers.
 
 ## Datasets
 
-Version 1 of the Zeitungs-LM was pretrained on the following corpora - which are all publicly available on the Model Hub:
+Version 1 of the Zeitungs-LM was pretrained on the following publicly available datasets:
 
 * [`biglam/europeana_newspapers`](https://huggingface.co/datasets/biglam/europeana_newspapers)
 * [`storytracer/German-PD-Newspapers`](https://huggingface.co/datasets/storytracer/German-PD-Newspapers)