Improve RS documentation.

bug 8570568
Change-Id: I465fcc8ec3e2cc892dc3cb0067aacf5224338102
diff --git a/graphics/java/android/renderscript/Float2.java b/graphics/java/android/renderscript/Float2.java
index 1d4ce36..0f730fe 100644
--- a/graphics/java/android/renderscript/Float2.java
+++ b/graphics/java/android/renderscript/Float2.java
@@ -21,7 +21,7 @@
 
 
 /**
- * Class for exposing the native Renderscript float2 type back to the Android system.
+ * Class for exposing the native RenderScript float2 type back to the Android system.
  *
  **/
 public class Float2 {