docs (resource): fix variable name consistency

[Hema2-official]

Hey,

At this section: https://runed.dev/docs/utilities/resource#usage

I noticed that the declared searchResource variable is being used as searchResults in the HTML part of the example code.
They do look very similar, so I can imagine how this managed to slip. But I think it could also cause some confusion.

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[Hema2-official]

Maybe it would make sense to use searchResults instead though, I just wanted to point out the mistake.