Fix invalid JSON (#9109)
More or less a typo fix.
Also, what does "topo" mean? Searching the docs for "topo" yields
nothing, and searching the repo yields
https://github.com/vercel/turborepo/blob/a8f38f13b6cd2a4c12f3dd08f2f631a9af4df19c/turbo.json#L215-L219
Why should `check-types` depend on `topo`? The docs point me to
"[Transit
Nodes](https://turbo.build/repo/docs/core-concepts/package-and-task-graph#transit-nodes)",
but I'm still confused. In particular,
> Turborepo calls the `ui` package a Transit Node in this scenario,
because it doesn't have its own `build` script.
So should we not have a `topo` script? If this is the case, why do other
`turbo.json` files in this repo have a `topo` task (which does nothing;
see below)?
Also, this repo's own `check-types` [doesn't depend on
topo](https://github.com/vercel/turborepo/blob/a8f38f13b6cd2a4c12f3dd08f2f631a9af4df19c/turbo.json#L202-L204).
This is especially confusing when combined with this comment I found
https://github.com/vercel/turborepo/blob/a8f38f13b6cd2a4c12f3dd08f2f631a9af4df19c/examples/turbo.json#L3-L6
because uh... the root `turbo.json` _does_ have a `topo` task (see
above).
I'm a turborepo noob so perhaps I'm missing something obvious, but I'm
filled with confusion while trying to setup Typescript right now 😢.
