Update creator-23.js

js/creator-23.js

@@ -1945,6 +1945,7 @@ function saveCard(saveFromFile) {
 		cardKey = prompt('Enter the name you would like to save your card under:', cardKey);
 		if (!cardKey) {return null;}
 	}
+	cardKey = cardKey.trim();
 	if (cardKeys.includes(cardKey)) {
 		if (!confirm('Would you like to overwrite your card previously saved as "' + cardKey + '"?\n(Clicking "cancel" will affix a version number)')) {
 			var originalCardKey = cardKey;