Resolve "feat: Fix files not uploading #52"

Closes #52 (closed)

backend/src/main/java/com/quiz/converter/handlers/FeedbackHandler.java

@@ -15,7 +15,7 @@ public class FeedbackHandler {
     public void add(String text, ParagraphType paragraphType) {
         switch (paragraphType) {
             case DEFAULT_FEEDBACK -> state.setDefaultFeedback(text.replaceAll("^\s*([dD][eE][fF][aA][uU][lL][tT])\s*([fF][eE][eE][dD][bB][aA][cC][kK])\s*(:)", "").strip());
-            case FEEDBACK -> {
+            case ANSWER_OPTION_FEEDBACK -> {
                 var feedbackText = text.toLowerCase().replace("feedback", "").strip().replace(":", "").strip();
                 state.getAnswerOptions().get(state.getAnswerOptions().size() - 1).setFeedback(Optional.of(feedbackText));
             }