Update README.md

I'm pretty sure it is a typo and should be "13TB", as mentioned in line 23.

README.md

@@ -36,7 +36,7 @@ git lfs pull --include "multilingual/c4-nl.*.json.gz"
 
 # Acknowledgements
 
-Big ups to the good folks at [Common Crawl](https://commoncrawl.org) whose data made this possible ([consider donating](http://commoncrawl.org/donate/)!), to Google for creating the code that curates and filters the data, and to Huggingface, who had no issue with hosting these 3TB of data for public download!
+Big ups to the good folks at [Common Crawl](https://commoncrawl.org) whose data made this possible ([consider donating](http://commoncrawl.org/donate/)!), to Google for creating the code that curates and filters the data, and to Huggingface, who had no issue with hosting these 13TB of data for public download!
 
 ### License