update README.md

Author: hoyelam

README.md

@@ -23,15 +23,15 @@ dependencies: [
 To translate a text
 ``` swift
 let authToken = "12345QWERTASDFG" // Provided by DeepL
-let service = DeepLAPI(authToken: testToken)
+let service = DeepLAPI(authToken: authToken)
 let request = TranslationRequest(
     text: "Hello World!",
     sourceLanguage: .english,
     targetLanguage: .dutch
 )
 
 do {
-    let result = try await sut.translateText(request: request)
+    let result = try await service.translateText(request: request)
     print(result.translations)
 } catch let error {
     // Your amazing error handling