Update openapi-ts command to use correct paramaters

[stevetemple]

📋 Description

The parameters for openapi-ts should be --input not --url

generate isn't a command as far as I can tell it gives the following error error: too many arguments. Expected 0 arguments but got 1. so that needed removing. Then this command works as supplied

✅ Contributor Checklist

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Product & Version (if relevant)

v16+

[eshanrnh]

Thanks for the PR, @stevetemple 🙌 We will review it as soon as we can.