Jetpack Onboarding: Improve Business Address field labels

[tyxla]

This PR updates the labels of the Business Address step as suggested in p6TEKc-1Rd-p2 and #22530. Changes are basically:

• Business Name to Business name
• Street Address to Street address
• State to State / Region / Province
• ZIP Code to ZIP code

Before:

After:

To test:

• Checkout this branch
• Checkout the Jetpack branch from REST API: Add Country field to Business Address onboarding step jetpack#8874 on your Jetpack site.
• Start the onboarding flow for the Jetpack site by going to /wp-admin/admin.php?page=jetpack&action=onboard&calypso_env=development
• On the site type step, choose Business
• Skip to the Business Address step.
• Verify the field labels appear as shown on the "After" screenshot.

[matticbot]

Test live: https://calypso.live/?branch=update/jpo-ba-improve-labels

[a8ci18n]

Hi! I've found a possible matching string that has already been translated 34 times:
translate( 'Zip Code' ) ES Score: 15
See 2 additional suggestions in the PR translation status page

Help me improve these suggestions: react with 👎 if the suggestion doesn't make any sense, or with 👍 if it's a particularly good one (even if not implemented).

[a8ci18n]

Hi! I've found a possible matching string that has already been translated 58 times:
translate( 'State/Province' ) ES Score: 7

Help me improve these suggestions: react with 👎 if the suggestion doesn't make any sense, or with 👍 if it's a particularly good one (even if not implemented).

[a8ci18n]

🆗 This change is safe, we'll keep the existing 24 translations.

[AnnaMag]

LGTM 👍

[tyxla]

Will merge this as it's consistent with the latest mockups, @joanrho @rickybanister if you have any suggestions for improvement, we can iterate later.