fix comment

Author: inwoods

Assets/FbxExporters/Editor/UnitTests/FbxAnimationTest.cs

@@ -1,4 +1,5 @@
-// NOTE: comment out the next line to leave temporary FBX files on disk
+// NOTE: uncomment the next line to leave temporary FBX files on disk
+// and create a imported object in the scene.
 // #define DEBUG_UNITTEST
 
 using UnityEngine;