@pxlplz I understand your point, but there's only so far away from the actual error you can with Hello World. It's a Hello World example, you know?
We can try a slightly different example, with the quotes fixed but % in the string, but this one is a lot less dramatic - a person with the on-device docs would have a real shot at quickly realizing that "%" is a special-case escape character (at least, if they're lucky enough to read the BSD docs, which are notably better than the Linux versions.)