Improve RS documentation.

bug 8570568
Change-Id: I465fcc8ec3e2cc892dc3cb0067aacf5224338102
diff --git a/graphics/java/android/renderscript/RSRuntimeException.java b/graphics/java/android/renderscript/RSRuntimeException.java
index 5a16478..b4b629e 100644
--- a/graphics/java/android/renderscript/RSRuntimeException.java
+++ b/graphics/java/android/renderscript/RSRuntimeException.java
@@ -19,7 +19,7 @@
 
 /**
  * Base class for all exceptions thrown by the Android
- * Renderscript
+ * RenderScript
  */
 public class RSRuntimeException
   extends java.lang.RuntimeException {