Add language tag

For this one, I've only added the 8 main languages.
Need to take a closer look at how to reference programming languages on the Hub.

README.md

@@ -1,3 +1,14 @@
+---
+language:
+- en
+- fr
+- de
+- es
+- it
+- pl
+- el
+- la
+---
 # Common Corpus
 
 Common Corpus is the largest open and permissible licensed text dataset, comprising 2 trillion tokens (1,998,647,168,282 tokens). It is a diverse dataset, consisting of books, newspapers, scientific articles, government and legal documents, code, and more. Common Corpus has been created by Pleias in association with several partners and contributed in-kind to Current AI initiative.
@@ -115,5 +126,4 @@ The collection of the corpus has been largely facilitated thanks to the open sci
   <img src="https://huggingface.co/datasets/PleIAs/common_corpus/resolve/main/logo/mozilla.png" style="width: 33%; margin: 0 auto; display: inline-block;"/>
   <img src="https://huggingface.co/datasets/PleIAs/common_corpus/resolve/main/logo/Currentai-Logo-Ondarkblue-Rgb-2000px-w-144ppi.webp" style="width: 33%; margin: 0 auto; display: inline-block;"/>   
   <img src="https://huggingface.co/datasets/PleIAs/common_corpus/resolve/main/logo/wikimedia_logo.png" style="width: 33%; margin: 0 auto; display: inline-block;"/>
-</div>
-
+</div>