Add copyright info for wiki_lingua dataset

datasets/wiki_lingua/README.md

@@ -89,7 +89,7 @@ task_ids:
 - summarization
 paperswithcode_id: wikilingua
 ---
-# Dataset Card Creation Guide
+# Dataset Card for "wiki_lingua"
 
 ## Table of Contents
 - [Dataset Description](#dataset-description)
@@ -187,7 +187,27 @@ ______________________________
 
 ### Data Splits
 
-[More Information Needed]
+|            |   train |
+|:-----------|--------:|
+| arabic     |    9995 |
+| chinese    |    6541 |
+| czech      |    2520 |
+| dutch      |   10862 |
+| english    |   57945 |
+| french     |   21690 |
+| german     |   20103 |
+| hindi      |    3402 |
+| indonesian |   16308 |
+| italian    |   17673 |
+| japanese   |    4372 |
+| korean     |    4111 |
+| portuguese |   28143 |
+| russian    |   18143 |
+| spanish    |    6616 |
+| thai       |    5093 |
+| turkish    |    1512 |
+| vietnamese |    6616 |
+
 ## Dataset Creation
 
 ### Curation Rationale
@@ -244,12 +264,22 @@ ______________________________
 
 ### Licensing Information
 
-[More Information Needed]
+- Article provided by wikiHow https://www.wikihow.com/Main-Page, a wiki building the world's largest, highest quality how-to manual. Please edit this article and find author credits at wikiHow.com. Content on wikiHow can be shared under a [Creative Commons license](http://creativecommons.org/licenses/by-nc-sa/3.0/).
+- Refer to [this webpage](https://www.wikihow.com/wikiHow:Attribution) for the specific attribution guidelines.
+- also see https://gem-benchmark.com/data_cards/WikiLingua
 
 ### Citation Information
 
-[More Information Needed]
+```bibtex
+@article{ladhak-wiki-2020,
+  title   = {WikiLingua: A New Benchmark Dataset for Multilingual Abstractive Summarization},
+  authors = {Faisal Ladhak, Esin Durmus, Claire Cardie and Kathleen McKeown},
+  journal = {arXiv preprint arXiv:2010.03093},
+  year    = {2020},
+  url     = {https://arxiv.org/abs/2010.03093}
+}
+```
 
 ### Contributions
 
-Thanks to [@katnoria](https://github.com/katnoria) for adding this dataset.
+Thanks to [@katnoria](https://github.com/katnoria) for adding this dataset.