used month name instead of number

public/elotracker/chart-integration.js

@@ -16,12 +16,12 @@ const x_scale = {
 	ticks: {
 		callback: (value, index, ticks) => {
 			let tickdate = new Date(value);
-			if (index === 0) return `${tickdate.getDate()}.${tickdate.getMonth() + 1}.`;
+			if (index === 0) return `${tickdate.getDate()}.${month_names[tickdate.getMonth()]}`;
 			let prev_tickdate = new Date(ticks[index-1].value);
 			if (prev_tickdate.getDate() === tickdate.getDate()) {
 				return null;
 			}
-			return `${tickdate.getDate()}.${tickdate.getMonth() + 1}.`;
+			return `${tickdate.getDate()}.${month_names[tickdate.getMonth()]}`;
 		}
 	}
 }
@@ -345,6 +345,7 @@ function format_time_minsec(date) {
 	}
 	return min + trenner + nullausgleich + date.getSeconds() + format;
 }
+const month_names = ["Jan","Feb","Mär","Apr","Mai","Jun","Jul","Aug","Sep","Okt","Nov","Dez"];
 
 async function update_leaderboard_elements() {
 	fetch(`./leaderboard_list.php`, {