change todos to todo in route name

[ckrenslehner]

Instead of curl http://localhost:8000/todos/ it needs to be curl http://localhost:8000/todo/.
The same change applies to the POST request.

I just tried the example and after applying this change, the example worked as described

[oddgrd]

Thanks! I see there is a disparity between the example in these docs and the one in our examples repository. We can merge this, but we should update this to /todo: https://github.com/shuttle-hq/shuttle-docs/blob/main/examples/rocket-postgres.mdx#L71 first. Would you mind adding that change @Krensi?

[ckrenslehner]

I updated the other occurrences. :-)

[oddgrd]

That's great, thank you!