fix typo in start tutorial

[ValorZard]

I'm like 90% sure this is a typo, since if you quickload "my-project" (maybe-reload-scene) doesn't exist. Only if you evaluate (trial:maybe-reload-scene) does it work.

Sidenote, I haven't been able to get maybe-reload-scene to actually work per say, but at least when running (trial:maybe-reload-scene) with C-c C-e it wont cause SBCL to bug out.