Describe the bug

K6 Template for typescript adds an extra , when a return type of void in the client.

Version of NSwag toolchain, computer and .NET runtime used

latest main (unreleased)

To Reproduce

npm run nswag with k6 as template type in nswag.json

Expected behavior

The generated typescript client won't have an extra comma in the properties of the function.

Additional context

The k6 template for typescript was introduced with #5239