fix(add): use author field and push to myLibrary

Author: rarityXtreme

debugging/book-library/script.js

@@ -37,8 +37,8 @@ function submit() {
     alert("Please fill all fields!");
     return false;
   } else {
-    let book = new Book(title.value, title.value, pages.value, check.checked);
-    library.push(book);
+    let book = new Book(title.value, author.value, pages.value, check.checked);
+  myLibrary.push(book);
     render();
   }
 }