Typo in npm organization name

**What happened**:
Organization name is `@severlessworkflow`

**What you expected to happen**:
Should be `@serverlessworkflow`

**How to reproduce it**:
`npm i --save @severlessworkflow/sdk-typescript`

**Anything else we need to know?**:
Maybe it's early enough to still change this? Otherwise someone may squat on the proper org name.
