fixed check style problems

Author: DashProsh

app/src/main/java/hexlet/code/Differ.java

@@ -5,6 +5,7 @@
 import java.io.IOException;
 import java.util.*;
 
+
 public class Differ {
 
     public static String generate(String filePath1, String filePath2, String format) throws IOException {

app/src/main/java/hexlet/code/formatters/Stylish.java

@@ -20,7 +20,8 @@ public static String format(List<Map<String, Object>> diff) {
                     result.append("  - ").append(key).append(": ").append(oldValue).append("\n");
                     result.append("  + ").append(key).append(": ").append(newValue).append("\n");
                 }
-                case "unchanged" -> result.append("    ").append(key).append(": ").append(entry.get("value")).append("\n");
+                case "unchanged" -> result.append("    ").append(key).append(": ")
+                        .append(entry.get("value")).append("\n");
                 default -> { }
             }
         }