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

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

Bug: 18327621
Change-Id: I5fcd285f58dcd74287937babf3f0a8122dab5d3d
diff --git a/telecomm/java/android/telecom/AudioState.java b/telecomm/java/android/telecom/AudioState.java
index bd63e00..3271ebf 100644
--- a/telecomm/java/android/telecom/AudioState.java
+++ b/telecomm/java/android/telecom/AudioState.java
@@ -91,7 +91,7 @@
     @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));