Docs: Add Storyblok Token

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Overview

Storyblok tokens cannot be created by outside contributors because they must contain Bloom content to be accurate. Given the Storyblok token is required, this blocks contributors. We have already created a Storyblok token for contributors here: #611. Now we must determine how we're going to share this with contributors.

Action Items

• Determine if we want to link the Notion page from the issue above so that we can change the Storyblok token without updating the docs... or if we want to plug it directly into the docs.
• Update the README docs with the Storyblok token.

Resources/Instructions

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