Explain what "attach" means #58
Description
We now have a concept of "attaching" to an environment as opposed to "activating" an environment. This makes no difference to how a user interacts with the Flox CLI, but it's language that they'll see when activating an environment. Since this isn't influencing how a user behaves, I don't think it makes sense to make an entire guide on, but it may be worth sticking in a temporary location and later putting in an "Activation" concept page.