edit the way to read the file

src/main/java/com/distributed/search/logic/TFIDFCalculator.java

@@ -19,7 +19,7 @@ public class TFIDFCalculator {
     public static List<String> getWordsFromDocument(Path filePath) {
         try {
             // قراءة الملف كنص UTF-8
-            String content = Files.readString(filePath, StandardCharsets.UTF_8);
+            String content = Files.readString(filePath, StandardCharsets.ISO_8859_1);
 
             // أحرف صغيرة
             content = content.toLowerCase(Locale.ROOT);