fix: Fixing export error requirement

Author: jordanmiguel

src/index.tsx

@@ -4,5 +4,5 @@ export default DocViewer;
 export { DocViewerRenderers } from "./renderers";
 export * from "./models";
 export * from "./utils/fileLoaders";
-export { AvailableLanguages } from "./i18n";
+export type { AvailableLanguages } from "./i18n";
 export * from "./renderers";