Update Getting Started (How to change the project and why?)

@peterflynn and I talked about this on gitter.
We shouldn't use an entity - it's text to be read by a human (it won't be shown in the browser because of the `<samp>` tags).
It don't care whether it's periods or a single character, I took it because the actual `Open Folder…` button uses these ellipsis, too.