Add link to uncased model

README.md

@@ -43,6 +43,9 @@ metrics:
 
 This is a [SpanMarker](https://github.com/tomaarsen/SpanMarkerNER) model that can be used for Named Entity Recognition. In particular, this SpanMarker model uses [bert-base-cased](https://huggingface.co/bert-base-cased) as the underlying encoder. See [train.py](train.py) for the training script.
 
+Is your data not (always) capitalized correctly? Then consider using the uncased variant of this model instead for better performance: 
+[tomaarsen/span-marker-bert-base-uncased-cross-ner](https://huggingface.co/tomaarsen/span-marker-bert-base-uncased-cross-ner).
+
 ## Labels & Metrics
 
 | **Label**          | **Examples** | **Precision** | **Recall** | **F1** |