fix: update docs example

[ra0x3]

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[ra0x3]

@deekerno Could you remind me how you viewed the docs portal locally? Wanna see if this fixes things (even though apparently it doesn't show any changes)

[deekerno]

I gotchu.

---

In order to read the documentation in the intended form (as part of the docs hub at docs.fuel.network), run the following steps:

• Clone the docs hub repository -- https://github.com/FuelLabs/docs-hub -- and follow the setup instructions.
• Open .gitmodules and add branch = [insert branch here] to the fuel-indexer section.
• Update the submodule for the indexer repo: git submodule update --remote docs/fuel-indexer.
• Run pnpm dev and navigate to localhost:3000 to read the docs.

[ra0x3]

@deekerno @lostman

• Looks like @sarahschwartz has the fix in https://github.com/FuelLabs/docs-hub/pull/58
• This PR still updates a single example, so still good to have