fix month

content/static/js/main.js

@@ -190,7 +190,7 @@ const fillCanvas = async () => {
 	const formattedBirthDate = (
 		birthDate.getDate()
 		+ ". "
-		+ birthDate.getMonth()
+		+ birthDate.getMonth() + 1
 		+ ". "
 		+ birthDate.getFullYear()
 	);
@@ -302,7 +302,7 @@ $(window).ready(
 		$("#current-date").val(
 			currentDate.getDate()
 			+ ". "
-			+ currentDate.getMonth()
+			+ currentDate.getMonth() + 1
 			+ ". "
 			+ currentDate.getFullYear()
 		);