Updated Questions to use standard getters

Questions now have standard getters to get the correct answers

src/Welsh Vocabulary Tutor/src/main/java/uk/ac/aber/cs22120/group20/selfassessment/MatchTheMeaningQuestion.java

@@ -3,11 +3,13 @@ package uk.ac.aber.cs22120.group20.selfassessment;
 import uk.ac.aber.cs22120.group20.json.DictionaryEntry;
 
 public class MatchTheMeaningQuestion extends Question {
-   DictionaryEntry[] correctAnswer;
+   private DictionaryEntry[] correctAnswer;
 
    public MatchTheMeaningQuestion(DictionaryEntry[] correctAnswer){
       this.correctAnswer = correctAnswer;
    }
 
-
+   public DictionaryEntry[] getCorrectAnswer() {
+      return correctAnswer;
+   }
 }

src/Welsh Vocabulary Tutor/src/main/java/uk/ac/aber/cs22120/group20/selfassessment/SixMeaningsQuestion.java

@@ -8,4 +8,8 @@ public class SixMeaningsQuestion extends Question{
    private SixMeaningsQuestion(DictionaryEntry correctAnswer) {
       this.correctAnswer = correctAnswer;
    }
+
+   public DictionaryEntry getCorrectAnswer() {
+      return correctAnswer;
+   }
 }

src/Welsh Vocabulary Tutor/src/main/java/uk/ac/aber/cs22120/group20/selfassessment/TranslationQuestion.java

@@ -5,9 +5,13 @@ import uk.ac.aber.cs22120.group20.json.DictionaryEntry;
 import java.util.LinkedList;
 
 public class TranslationQuestion extends Question {
-   DictionaryEntry correctAnswer;
+   private DictionaryEntry correctAnswer;
 
    public TranslationQuestion(DictionaryEntry correctAnswer){
       this.correctAnswer = correctAnswer;
    }
+
+   public DictionaryEntry getCorrectAnswer() {
+      return correctAnswer;
+   }
 }