fix: correct file header

Author: clementb49

basilisk/res/locale/pt_BR/LC_MESSAGES/basiliskLLM.po

@@ -13,7 +13,7 @@ msgstr ""
 "Plural-Forms: nplurals=2; plural=(n > 1);\n"
 "X-Crowdin-Project: basiliskllm\n"
 "X-Crowdin-Project-ID: 724543\n"
-"X-Crowdin-Language: pt-BR\n"
+"X-Crowdin-Language: pt_BR\n"
 "X-Crowdin-File: basiliskLLM.pot\n"
 "X-Crowdin-File-ID: 2\n"
 "Language: pt_BR\n"