fix docs examples

[StarpTech]

Checklist

• run npm run test and npm run benchmark
• tests and/or benchmarks are included
• documentation is changed or added
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[mcollina]

Can we support both APIs at the same time?

[StarpTech]

Should work but it will conflict if you add the schema with the same name twice => addToBody:true and attachFieldsToBody:true and sharedSchemaId:123 all other parts are encapsulated to the request.