Update doc.go
Update doc.go

Proposed minor grammar edits
lukasmacko/cn-infra,jozef-slezak/cn-infra,junmipan/cn-infra,jozef-slezak/cn-infra,mpundlik/cn-infra,lukasmacko/cn-infra,mpundlik/cn-infra,ligato/cn-infra,junmipan/cn-infra,ligato/cn-infra