Documentation fix: "Creating a Service" in getting-started.md is incorrect

[dhait]

Nit-picky point, I know, but in docs/getting-started.md

# Create a new serverless project
serverless

# Move into the newly created directory
cd your-service-name

This is incorrect, and misleading. serverless (and sls) do nothing at all.

It should be:

# Create a new serverless project
serverless create --template <template>

to create in the current directory.

Ideally, serverless with no commands should return the help page.

[mnapoli]

Thanks for the report, a pull request is welcome 👍