Bump AS3 Language progress to 75%

ruffle-rs/ruffle#12967 was recently merged, which is a big milestone!

Author: n0samu

index.html

@@ -331,9 +331,9 @@ <h4>AVM 2</h4>
 					</p>
 
 					<p>
-					<h5>ActionScript 3 Language <code>70%</code></h5>
-					<div class="meter" title="70%">
-						<span style="width:70%;"><span class="progress"></span></span>
+					<h5>ActionScript 3 Language <code>75%</code></h5>
+					<div class="meter" title="75%">
+						<span style="width:75%;"><span class="progress"></span></span>
 					</div>
 					</p>