Update storage bucket path in documentation

[mishig25]

Making it consistent to use username/my-bucket in examples

follow up to #2375 (comment)

---

Note

Low Risk
Low risk documentation-only change updating a CLI example path; no runtime or API behavior is affected.

Overview
Updates storage-buckets.md to change the hf buckets cp example destination from hf://buckets/username/my-bucket to hf://buckets/username/fineweb-data, aligning the example with the surrounding fineweb dataset copy scenario.

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[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[Wauplin]

no strong opinion but I feel "hf://buckets/username/fineweb-data", is nicer as an example

[mishig25]

in that case, I can update the python one to /username/fineweb-data

hub-docs/docs/hub/storage-buckets.md

Lines 296 to 299 in 5d784d5

	api.copy_files(
	"hf://datasets/HuggingFaceFW/fineweb/data",
	"hf://buckets/username/my-bucket",
	)