Update js-storefronts content

[spartacus-serviceuser]

trafficstars

This PR updates the content of the js-storefronts.

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[cla-assistant[bot]]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}