Merge pull request #132 from wendelinwemhoener/fix-flashcard-typo

Fix typo

Author: wendelinwemhoener

src/main/java/seedu/duke/flashcard/review/ReviewMode.java

@@ -66,7 +66,7 @@ protected void printFlashcardFrontTextPrompt(Flashcard flashcardToReview) {
 
     protected void letUserRateReviewDifficulty(Scanner scanner,
                                                Flashcard flashcard) {
-        System.out.println("    How hard was it to remeber the back page of " +
+        System.out.println("    How hard was it to remember the back page of " +
                 "this flashcard?");
         System.out.println("    Press <E> if it was easy, <M> if it was " +
                 "moderately challenging or <H> if it was quite hard.");