Fix side-by-side antialias image

Resolves #679

Author: hollasch

CHANGELOG.md

@@ -1,6 +1,13 @@
 Change Log -- Ray Tracing in One Weekend
 ====================================================================================================
 
+# v3.2.1 (in progress)
+
+### _In One Weekend_
+  - Fix: replace old anti-alias result image with before-and-after image (#679)
+
+
+----------------------------------------------------------------------------------------------------
 # v3.2.0 (2020-07-18)
 
 We're still chasing that elusive stable project state where we're mostly done with large changes,

books/RayTracingInOneWeekend.html

@@ -1505,7 +1505,8 @@
 
 Zooming into the image that is produced, we can see the difference in edge pixels.
 
-  ![Image 6: Before and after antialiasng](../images/img-1.06-antialias.png class=pixel)
+  ![Image 6: Before and after antialiasing
+  ](../images/img-1.06-antialias-before-after.png class=pixel)