Fixed typos

autovalue/src/main/java/com/baeldung/autoservice/BingTranslationServiceProvider.java

@@ -9,7 +9,7 @@ public class BingTranslationServiceProvider implements TranslationService {
 
     public String translate(String message, Locale from, Locale to) {
         
-		// implementation details
+        // implementation details
         return message + " (translated by Bing)"; 
     }
 }

autovalue/src/main/java/com/baeldung/autoservice/GoogleTranslationServiceProvider.java

@@ -9,7 +9,7 @@ public class GoogleTranslationServiceProvider implements TranslationService {
 
     public String translate(String message, Locale from, Locale to) {
         
-		// implementation details
+        // implementation details
         return message + " (translated by Google)"; 
     }
 }

autovalue/src/test/java/com/baeldung/autoservice/TranslationServiceUnitTest.java

@@ -1,6 +1,7 @@
 package com.baeldung.autoservice;
 
 import com.baeldung.autoservice.TranslationService;
+import org.junit.Before;
 import org.junit.Test;
 
 import java.util.ServiceLoader;