Minor grammar fixes for development file (#9805)
Minor grammar fixes for development file (#9805)

* chore: grammar: set up (vp)

* chore: grammar: built-in

* chore: brand: macOS

* chore: brand: Kubernetes

* chore: grammar: check out (vp)

* chore: spelling: cluster-admin

* chore: grammar: the following (article)

* chore: grammar: oxford comma
knative/serving,knative/serving