Docs: updates to about section

[ianmcburnie]

• This PR contains CSS changes
• This PR does not contain CSS changes

Description

A gradual step in tone away from tight coupling to the eBay brand, towards how we want to also support non-branded experiences (even though our CSS variables aren't quite fully there yet)

[changeset-bot]

⚠️ No Changeset found

Latest commit: cd0b459

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR