Add language tag

Hi
A PR to improve the referencing of your dataset 🤗

README.md

@@ -1,5 +1,10 @@
 ---
 license: openrail
+language:
+- en
+- es
+- fr
+- ro
 ---
 
 # European Languages Multipurpose Dataset for NER
@@ -31,5 +36,4 @@ This dataset can be used to:
 
 ## Contributing
 
-If you have suggestions for improving or expanding the dataset, please feel free to open an issue or submit a pull request.
-
+If you have suggestions for improving or expanding the dataset, please feel free to open an issue or submit a pull request.