These are "ways to get paid", but "jobs" implicitly may or may not be relevant to the topic. If there's no game, politics, or sales aspect whatsoever, which is rarely but not never the case, then it's kind of irrelevant.
Seems like a strange correction, although we're both correct, because the title of the page says "Three Ways to Get Paid", but the difference is negligible.
A job is one way to make a living, in which these ways may apply, but a job doesn't necessarily have to pay at all and can be entirely volunteer, if we're being pedantic. Jobs are often very bad ways to make a living these days.
The link literally says "There are three ways to make a living."