Add NOI 2021 scoreboard

Author: Matistjati

index.html

@@ -192,8 +192,8 @@ <h3>Test Data</h3>
         <div class="callout">
 			<h1>NOI 2021</h1>
 			<p>
-			The Nordic Olympiad in Informatics 2021 was held on the 24th of March by Norway (<a href="https://noi2021.nio.no/">official site</a>).
-			Results are available <a href="https://noi2021.nio.no/">here</a>.
+			The Nordic Olympiad in Informatics 2021 was held on the 24th of March by Norway (<a href="https://noi2021.nio.no/">official site (can be read using wayback machine)</a>).
+			Results are available <a href="/results2021"></a>here</a>.
 
 			<p>
 			The three selected tasks were Pearls (from Denmark), The Elk (from Norway) and Amazing Whispers (from Norway).