[Durable Objects] Pricing wording

[Oxyjun]

Summary

Recreation of #23360.

1. FAQ is already updated with better wording.
2. This PR mainly removes the 10s sentence from the partial file.

Screenshots (optional)

Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The documentation style guide has been adhered to.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

[github-actions]

This PR requires additional review attention because it affects the following areas:

Partials

This PR updates partial files, which are pieces of content used across multiple files in our Render component.

• durable-objects/do-faq-pricing - view affected files
• durable-objects/durable-objects-pricing - view affected files

[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
*	@cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://b1283bec.preview.developers.cloudflare.com
Preview Branch URL: https://jun-do-pricing-recreate.preview.developers.cloudflare.com