Update README.md

README.md

@@ -63,7 +63,7 @@ The corpus is released in JSONL format. Each document contains the following att
 ### Source Data
 
 <!-- This section describes the source data (e.g. news text and headlines, social media posts, translated sentences, ...). -->
-This is a corpus of the Basque language. It contains 521,546,047 raw words (counted by the '```wc -w```' command over the text attribute) in 1.63M documents. It was gathered from various web sources and contains data up to 2024/02/23. 
+This is a corpus of the Basque language. It contains 521,546,047 raw words (counted by the '```wc -w```' command over the text attribute) in 1.63M documents. It was gathered from various web sources and contains data up to 2024/02/19. 
 
 The following table summarizes corpus statistics and license information.