Update app_rvc.py

app_rvc.py

@@ -2990,7 +2990,7 @@ def create_gui(theme, logs_in_gui=False):
     return app
 
 
-def get_language_config(language_data, language=None, base_key="english"):
+def get_language_config(language_data, language=None, base_key="czech"):
     base_lang = language_data.get(base_key)
 
     if language not in language_data:
@@ -3043,7 +3043,7 @@ def create_parser():
     parser.add_argument(
         "--language",
         type=str,
-        default="english",
+        default="czech",
         help=" Select the language of the interface: english, spanish",
     )
     parser.add_argument(