[docs] Fix typo in command-line.en-us.md (#14746)
[docs] Fix typo in command-line.en-us.md (#14746)

seperated -> separated

Co-authored-by: 6543 <38d17c89bbb30dc9e2665c7359356aaa08c63a4d@obermui.de>
Co-authored-by: techknowlogick <274271a2414b6bd0d2eb0401dd4ff6e85d7016a7@gitea.io>
vdbt/gitea,cez81/gitea,cez81/gitea,vdbt/gitea,go-gitea/gitea,go-gitea/gitea,go-gitea/gitea,cez81/gitea