Update files from the datasets library (from 1.4.0)

Release notes: https://github.com/huggingface/datasets/releases/tag/1.4.0

README.md

@@ -27,7 +27,7 @@
   - [Citation Information](#citation-information)
   - [Contributions](#contributions)
 
-## [Dataset Description](#dataset-description)
+## Dataset Description
 
 - **Homepage:** [https://blog.einstein.ai/the-wikitext-long-term-dependency-language-modeling-dataset/](https://blog.einstein.ai/the-wikitext-long-term-dependency-language-modeling-dataset/)
 - **Repository:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
@@ -37,24 +37,24 @@
 - **Size of the generated dataset:** 1072.25 MB
 - **Total amount of disk used:** 1445.53 MB
 
-### [Dataset Summary](#dataset-summary)
+### Dataset Summary
 
  The WikiText language modeling dataset is a collection of over 100 million tokens extracted from the set of verified
  Good and Featured articles on Wikipedia. The dataset is available under the Creative Commons Attribution-ShareAlike License.
 
-### [Supported Tasks](#supported-tasks)
+### Supported Tasks
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-### [Languages](#languages)
+### Languages
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-## [Dataset Structure](#dataset-structure)
+## Dataset Structure
 
 We show detailed information for up to 5 configurations of the dataset.
 
-### [Data Instances](#data-instances)
+### Data Instances
 
 #### wikitext-103-raw-v1
 
@@ -116,7 +116,7 @@ This example was too long and was cropped:
 }
 ```
 
-### [Data Fields](#data-fields)
+### Data Fields
 
 The data fields are the same among all splits.
 
@@ -132,7 +132,7 @@ The data fields are the same among all splits.
 #### wikitext-2-v1
 - `text`: a `string` feature.
 
-### [Data Splits Sample Size](#data-splits-sample-size)
+### Data Splits Sample Size
 
 |       name        | train |validation|test|
 |-------------------|------:|---------:|---:|
@@ -141,49 +141,49 @@ The data fields are the same among all splits.
 |wikitext-2-raw-v1  |  36718|      3760|4358|
 |wikitext-2-v1      |  36718|      3760|4358|
 
-## [Dataset Creation](#dataset-creation)
+## Dataset Creation
 
-### [Curation Rationale](#curation-rationale)
+### Curation Rationale
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-### [Source Data](#source-data)
+### Source Data
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-### [Annotations](#annotations)
+### Annotations
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-### [Personal and Sensitive Information](#personal-and-sensitive-information)
+### Personal and Sensitive Information
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-## [Considerations for Using the Data](#considerations-for-using-the-data)
+## Considerations for Using the Data
 
-### [Social Impact of Dataset](#social-impact-of-dataset)
+### Social Impact of Dataset
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-### [Discussion of Biases](#discussion-of-biases)
+### Discussion of Biases
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-### [Other Known Limitations](#other-known-limitations)
+### Other Known Limitations
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-## [Additional Information](#additional-information)
+## Additional Information
 
-### [Dataset Curators](#dataset-curators)
+### Dataset Curators
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-### [Licensing Information](#licensing-information)
+### Licensing Information
 
 [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 
-### [Citation Information](#citation-information)
+### Citation Information
 
 ```
 @InProceedings{wikitext,