Update README.md

README.md

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-# KP20k dataset for Keyphrase Generation
+---
+annotations_creators:
+- unknown
+language_creators:
+- unknown
+languages:
+- en
+licenses:
+- unknown
+multilinguality:
+- monolingual
+task_categories:
+- text-mining
+- text-generation
+task_ids:
+- keyphrase-generation
+- keyphrase-extraction
+size_categories:
+- 100K<n<1M
+pretty_name: KP20k
+---
+
+# KP20k Benchmark Dataset for Keyphrase Generation
 
 ## About
+
 KP20k is a dataset for benchmarking keyphrase extraction and generation models.
 The data is composed of 570 809 abstracts and their associated titles from scientific articles.