Since you said you field checked it, you could always tweak it in OSM.
After taking a quick glance at how to update OSM, even this small tweak looks a wee bit beyond my current skill level. If I can find the time to educate myself, I may consider making such edits some time down the road. Even without the underlying OSM update, it might still be worth updating the Travel Mapping HB since all the roads currently exist in OSM even if they are labeled incorrectly.
I appreciate the suggestion on editing OSM. Looks like it could be a worthwhile thing to know how to do.