Fix `license` metadata

We recently updated the datasets metadata for consistency with other repo types (models & spaces)

Thanks! 🙏

README.md

@@ -3,14 +3,14 @@ annotations_creators:
 - found
 language_creators:
 - found
-languages:
+language:
 - da
 - nn
 - nb
 - fo
 - is
 - sv
-licenses:
+license:
 - cc-by-sa-3.0
 multilinguality:
 - multilingual
@@ -66,7 +66,7 @@ between closely related languages is especially difficult. This paper presents
 a machine learning approach for automatic language identification for the
 Nordic languages, which often suffer miscategorisation by existing 
 state-of-the-art tools. Concretely we will focus on discrimination between six 
-Nordic languages: Danish, Swedish, Norwegian (Nynorsk), Norwegian (Bokmål), 
+Nordic language: Danish, Swedish, Norwegian (Nynorsk), Norwegian (Bokmål), 
 Faroese and Icelandic.
 
 This is the data for the tasks. Two variants are provided: 10K and 50K, with
@@ -80,7 +80,7 @@ For more info, see the paper: [Discriminating Between Similar Nordic Languages](
 
 ### Languages
 
-This dataset is in six similar Nordic languages:
+This dataset is in six similar Nordic language:
 
 - Danish, `da`
 - Faroese, `fo`