Update README.md

README.md

@@ -72,7 +72,7 @@ The following table summarizes corpus statistics and license information.
 | Tokikom 📝                  | https://tokikom.eus/bazkideak/                                                                  | news           | 163.72         | cc-by / cc-by-sa             |
 | Berria                      | https://berria.eus                                                                              | news           | 125.72         | cc-by-sa 4.0                 |
 | Eusko Legebiltzarra         | https://www.legebiltzarra.eus                                                                   | administrative | 80.16          | public domain                |
-| Wikipedia                   | https://wikipedia.org                                                                           | wikipedia      | 63.83          | cc0                          |
+| Wikipedia                   | https://wikipedia.org                                                                           | wikipedia      | 63.83          | cc-by-sa 4.0                         |
 | Argia                       | https://www.argia.eus                                                                           | news           | 17.44          | cc-by-sa 4.0                 |
 | Addi                        | https://addi.ehu.es/                                                                            | science        | 17.09          | several cc variants    |
 | Opendata Euskadi subtiitles | https://opendata.euskadi.eus/catalogo/-/euskarazko-azpitituluak-filmak-eta-telesailak-euskaraz/ | subtitles      | 11.30          | cc-by-sa                     |