This is a wiki bug report.
This is the web page and section:
On that section you can find 4 images; one for each binding. The third and fourth images are the same, they are both Input_wasd_settings_3.png when the fourth one should be Input_wasd_settings_4.png.
The image currently in use is: A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums
And the image it should be using but is not: A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums
Thus: The first three images are correct, just the fourth image has the wrong number.