add Basque translation

exampleSite/content/docs/configuration/index.md

@@ -67,6 +67,7 @@ The theme currently supports the following languages by default:
 | Language                     | Code    |
 | ---------------------------- | ------- |
 | Arabic                       | `ar`    |
+| Basque                       | `eu`    |
 | Bulgarian                    | `bg`    |
 | Bengali                      | `bn`    |
 | Catalan                      | `ca`    |

exampleSite/content/docs/welcome/index.es.md

@@ -26,7 +26,7 @@ Una característica muy solicitada: ¡Blowfish ahora es multilingüe! Si publica
 
 <div class="text-2xl text-center" style="font-size: 2.8rem">🇬🇧 🇩🇪 🇫🇷 🇪🇸 🇨🇳 🇧🇷 🇹🇷 🇧🇩</div>
 
-Gracias a las contribuciones de la comunidad, Blowfish ya ha sido traducido a [treinta idiomas](https://github.com/nunocoracao/blowfish/tree/main/i18n), y se añadirán más con el tiempo. Por cierto, ¡los [pull requests](https://github.com/nunocoracao/blowfish/pulls) para nuevos idiomas siempre son bienvenidos!
+Gracias a las contribuciones de la comunidad, Blowfish ya ha sido traducido a [treinta y dos idiomas](https://github.com/nunocoracao/blowfish/tree/main/i18n), y se añadirán más con el tiempo. Por cierto, ¡los [pull requests](https://github.com/nunocoracao/blowfish/pulls) para nuevos idiomas siempre son bienvenidos!
 
 ## Soporte para idiomas RTL
 

exampleSite/content/docs/welcome/index.md

@@ -26,7 +26,7 @@ A highly requested feature, Blowfish is now multilingual! If you publish your co
 
 <div class="text-2xl text-center" style="font-size: 2.8rem">🇬🇧 🇩🇪 🇫🇷 🇪🇸 🇨🇳 🇧🇷 🇹🇷 🇧🇩</div>
 
-Thanks to submissions from the community, Blowfish has already been translated into [thirty languages](https://github.com/nunocoracao/blowfish/tree/main/i18n) with more to be added over time. By the way, [pull requests](https://github.com/nunocoracao/blowfish/pulls) for new languages are always welcome!
+Thanks to submissions from the community, Blowfish has already been translated into [thirty-two languages](https://github.com/nunocoracao/blowfish/tree/main/i18n) with more to be added over time. By the way, [pull requests](https://github.com/nunocoracao/blowfish/pulls) for new languages are always welcome!
 
 ## RTL language support