Fix typo

Author: boronine

website/content/credits.mustache

@@ -78,7 +78,7 @@
     — Objective-C implementation.
 </p>
 <p>
-    <a href="https://github.com/romanilyina"><strong>Roman «Stinger» Ilyin</strong></a>
+    <a href="https://github.com/romanilyin"><strong>Roman «Stinger» Ilyin</strong></a>
     &mdash; HLSL implementation.
 </p>
 <p>