'jq to update key:value objects with matching strings at the begining

I need to update below json file values where key matches a substring. sample.json

{
"A": "a"
"re": {
  "jok/pok": ^20.0,
  "sok/dok": ^23.0,
  "jok/ssd": ^32.0
}
}

now I need to append -dev to those key/values where key starts with jok.

{
"A": "a"
"re": {
  "jok/pok": ^20.0-dev,
  "sok/dok": ^23.0,
  "jok/ssd": ^32.0-dev
}
}

I know I'm missing some really simple solution.

json string bash jq

Sources

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