Fix reference to params.viewOffsetX (#26433)

examples/webgl_postprocessing_ssaa.html

@@ -185,7 +185,7 @@
 				const aspect = width / height;
 
 				cameraP.aspect = aspect;
-				cameraP.setViewOffset( width, height, params.viewOffset, 0, width, height );
+				cameraP.setViewOffset( width, height, params.viewOffsetX, 0, width, height );
 				cameraO.updateProjectionMatrix();
 
 				cameraO.left = - height * aspect;