Update README.md

Author: john0005

src/main/java/com/esri/samples/raster/stretch_renderer/README.md

@@ -14,11 +14,11 @@ in dark images.</p>
 
 <p>To apply a <code>StretchRenderer</code> to a <code>RasterLayer</code>:</p>
 <ol>
-  <li>Create a <code>Raster</code> from a raster file</li>
-  <li>Create a raster layer from the raster</li>
-  <li>Create a <code>Basemap</code> from the raster layer and set it to the map</li>
-  <li>Create a stretch renderer, specifying the stretch parameters and other properties</li>
-  <li>Set the renderer on the raster layer with <code>rasterLayer.setRenderer(renderer)</code></li>
+  <li>Create a <code>Raster</code> from a raster file.</li>
+  <li>Create a raster layer from the raster.</li>
+  <li>Create a <code>Basemap</code> from the raster layer and set it to the map.</li>
+  <li>Create a stretch renderer, specifying the stretch parameters and other properties.</li>
+  <li>Set the renderer on the raster layer with <code>rasterLayer.setRenderer(renderer)</code>.</li>
 </ol>
 
 <h2>Features</h2>