docs: fix Destination file already exists in Nushell

[azzamsa]

It is a common practice to use -f in Nushell configurations to avoid Destination file already exists error.

🦄 nu
Error:   × Destination file already exists
    ╭─[/home/user/.config/nushell/env.nu:20:1]
 20 │ starship init nu | save -f ~/.cache/starship/init.nu
 21 │ atuin init nu | save ~/.local/share/atuin/init.nu
    ·                      ──────────────┬─────────────
    ·                                    ╰── Destination file '/home/user/.local/share/atuin/init.nu' already exists
 22 │
    ╰────
  help: you can use -f, --force to force overwriting the destination

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Name	Status	Preview	Comments	Updated (UTC)
atuin-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 9, 2024 4:11pm

[ellie]

Thank you!

Seeing as this is your first time contributing, if you would like a holographic contributors-only Atuin sticker, then please fill out this form!

[azzamsa]

Seeing as this is your first time contributing, if you would like a holographic contributors-only Atuin sticker, then please fill out this form!

Hi, Ellie 👋🏼

Thank you.
But, I am on the other side of the ocean.
I am afraid this trivial PR is not worth the shipping cost 🤔

[ellie]

Thank you. But, I am on the other side of the ocean. I am afraid this trivial PR is not worth the shipping cost 🤔

Any sized PR is worth a sticker if accepted! I've shipped them all over the place :)

[azzamsa]

Any sized PR is worth a sticker if accepted! I've shipped them all over the place :)

Oh my! That's very kind of you.
What a lucky day today!

Thank you so so much 🍰