added more information to dataset card

README.md

@@ -73,7 +73,7 @@ task_categories:
 ## Dataset Description
 
 - **Homepage:**
-- **Repository:** 
+- **Repository:** [GitHub](https://github.com/JoelNiklaus/LegalDatasets/tree/main/pretrain/mc4_legal)
 - **Paper:** 
 - **Leaderboard:**
 - **Point of Contact:** [Joel Niklaus](mailto:[email protected])
@@ -84,7 +84,7 @@ This dataset contains large text resources from mc4 filtered for legal data that
 
 ### Supported Tasks and Leaderboards
 
-The dataset supports the tasks of masked language modeling.
+The dataset supports the task of masked language modeling.
 
 ### Languages
 
@@ -96,6 +96,34 @@ The following languages are supported: bg, cs, da, de, el, en, es, et, fi, fr, g
 
 The file format is jsonl.xz and there is one split available ("train"). 
 
+
+| Source | Size (MB) | Tokens | Documents | Words/Document |
+|-------:|----------:|-------:|----------:|---------------:|
+|     bg |      13.9 |    xxx |       xxx |            xxx |
+|     cs |   7'252.4 |    xxx |       xxx |            xxx |
+|     da |      37.7 |    xxx |       xxx |            xxx |
+|     de |  27'651.3 |    xxx |       xxx |            xxx |
+|     el |      69.2 |    xxx |       xxx |            xxx |
+|     en |  22'043.9 |    xxx |       xxx |            xxx |
+|     es |  21'410.2 |    xxx |       xxx |            xxx |
+|     et |     552.7 |    xxx |       xxx |            xxx |
+|     fi |   8'074.0 |    xxx |       xxx |            xxx |
+|     fr |  10'974.1 |    xxx |       xxx |            xxx |
+|     ga |       3.5 |    xxx |       xxx |            xxx |
+|     hu |   1'450.0 |    xxx |       xxx |            xxx |
+|     it |  12'368.6 |    xxx |       xxx |            xxx |
+|     lt |     175.9 |    xxx |       xxx |            xxx |
+|     lv |       0.3 |    xxx |       xxx |            xxx |
+|     mt |     227.7 |    xxx |       xxx |            xxx |
+|     nl |      82.9 |    xxx |       xxx |            xxx |
+|     pl |  10'008.0 |    xxx |       xxx |            xxx |
+|     pt |   4'799.3 |    xxx |       xxx |            xxx |
+|     ro |   2'124.3 |    xxx |       xxx |            xxx |
+|     sk |   1'388.5 |    xxx |       xxx |            xxx |
+|     sl |     404.6 |    xxx |       xxx |            xxx |
+|     sv |   1'888.1 |    xxx |       xxx |            xxx |
+
+
 ### Data Fields
 
 [More Information Needed]
@@ -106,6 +134,10 @@ The file format is jsonl.xz and there is one split available ("train").
 
 ## Dataset Creation
 
+The dataset was created by filtering mc4 for legal data. 
+We used terms indicating legal citations to get the texts. 
+Note that this dataset can be quite noisy, and the quality is not known.
+
 ### Curation Rationale
 
 [More Information Needed]