Update app.html

Author: SnaveSutit

src/app.html

@@ -13,7 +13,7 @@
 		/>
 		<meta content="https://animated-java.github.io" property="og:url" />
 		<meta
-			content="https://animated-java.github.io/img/animated_java_icon.svg"
+			content="https://animated-java.github.io/img/animated_java_animated_icon.png"
 			property="og:image"
 		/>
 		<meta content="#00ACED" data-react-helmet="true" name="theme-color" />