Change a semi-colon to a colon in AudioState logging.

I believe "route;" -> "route:" was the intended context.

Bug: 18327621
Change-Id: I5fcd285f58dcd74287937babf3f0a8122dab5d3d

telecomm/java/android/telecom/AudioState.java

@@ -91,7 +91,7 @@ public final class AudioState implements Parcelable {
     @Override
     public String toString() {
         return String.format(Locale.US,
-                "[AudioState isMuted: %b, route; %s, supportedRouteMask: %s]",
+                "[AudioState isMuted: %b, route: %s, supportedRouteMask: %s]",
                 isMuted,
                 audioRouteToString(route),
                 audioRouteToString(supportedRouteMask));