Fix typo in docs for addOnFrameMetricsAvailableListener.

Change-Id: Iad6cde0f2a17ab03dceb29978c25013f047dfae0
diff --git a/core/java/android/view/Window.java b/core/java/android/view/Window.java
index 78e4204..b9f9e5e 100644
--- a/core/java/android/view/Window.java
+++ b/core/java/android/view/Window.java
@@ -854,7 +854,7 @@
     }
 
     /**
-     * Set an observer to collect frame stats for each frame rendererd in this window.
+     * Set an observer to collect frame stats for each frame rendered in this window.
      *
      * Must be in hardware rendering mode.
      */