Update README.md

README.md

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 # HPLT Monolingual Release v1.2
 
+This repository contains the means to access the datasets created by the [HPLT project](https://hplt-project.org/datasets/v1.2). These large-scale web-crawled corpora based on CommonCrawl and the Internet Archive are accessible in 75 languages. The full dump is available as well as deduplicated and further cleaned versions depending on the config that you use (see the usage example below).
+
 ## Prerequisites
 
 HPLT compresses their files with `zst` so to use this library you need to make sure that `zstandard` is installed:
@@ -93,7 +95,7 @@ HPLT compresses their files with `zst` so to use this library you need to make s
 pip install zstandard
 ```
 
-## Usages
+## Usage
 
 You can download either the full portion of the data (e.g. `nl`), its deduplicated set (`nl_deduplicated`), or the fully cleaned set (`nl_cleaned`).