change rendering to ray tracing (#282)

Author: rscohn2

source/elements/oneART/source/index.rst

@@ -4,20 +4,20 @@
 
 .. _oneart-section:
 
-==================
-Advanced Rendering
-==================
+====================
+Advanced Ray Tracing
+====================
 
 Overview
 --------
 
-oneAPI Advanced Ray Tracing defines a set of Ray Tracing and
-high-fidelity Rendering and computation routines for use in a wide
-variety of 3D graphics uses including, film and television
-photorealistic visual effects and animation rendering, scientific
-visualization, high-performance computing computations, gaming, and
-more. Advanced rendering is designed to allow cooperative execution on
-a wide variety of computational devices: CPUs, GPUs, FPGAs, and other
+Advanced ray tracing defines a set of ray tracing and high-fidelity
+rendering and computation routines for use in a wide variety of 3D
+graphics uses including, film and television photorealistic visual
+effects and animation rendering, scientific visualization,
+high-performance computing computations, gaming, and more. Advanced
+ray tracing is designed to allow cooperative execution on a wide
+variety of computational devices: CPUs, GPUs, FPGAs, and other
 accelerators, termed “XPU” computation. The functionality is
 subdivided into several domains: geometric ray tracing computations,
 volumetric computation and rendering, path guided ray tracing, image
@@ -27,7 +27,7 @@ highly capable, easy to use rendering engine.
 
 The individual components and their APIs are described.  Other design
 considerations and related components that are not necessarily part of
-the advanced rendering specification but that are worth mentioning
+the advanced ray tracing specification but that are worth mentioning
 will be discussed in the appendix.
 
 .. toctree::