tweak wording in actions-is-preferred.md to be more generically applicable

[0xdevalias]

Why:

I was just clicking through some of the pages this reusable is included on, and I think in most places it's used the wording would probably be better as:

While the github-pages gem remains...

Instead of:

While this github-pages gem remains...

As many places it's used are seemingly talking about Jekyll more generically; so 'this' doesn't make as much sense as 'the' RE: the pages-gem IMO.

Originally posted by @0xdevalias in #39148 (comment)

Nooooo, I changed that thinking it would read better, but I was wrong. 😢 If you feel like opening a PR to fix it that would probably be fastest, because it takes a while for small PRs to get reviewed internally, but I can also open it if you don't feel like doing it.

Originally posted by @Sharra-writes in #39148 (comment)

Followup to: #39148
Closes: #36740

What's being changed (if available, include any code snippets, screenshots, or gifs):

Changes the word 'this' to 'the' in the actions-is-preferred.md reusable that @Sharra-writes created to better / more generically fit the vibe/flow where the reusable it being used.

Check off the following:

• A subject matter expert (SME) has reviewed the technical accuracy of the content in this PR. In most cases, the author can be the SME. Open source contributions may require an SME review from GitHub staff.
• The changes in this PR meet the docs fundamentals that are required for all content.
• All CI checks are passing and the changes look good in the review environment.

[Copilot]

Pull Request Overview

This PR improves the wording of a reusable content snippet to be more generically applicable across different contexts. The change replaces a context-specific pronoun with a more neutral alternative to better fit the various pages where this reusable content is included.

• Updates pronoun from "this" to "the" in the actions-is-preferred.md reusable
• Improves generic applicability of the content across multiple usage contexts
• Maintains the same technical meaning while enhancing readability

[github-actions]

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Table of review links

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The table shows the files in the content directory that were changed in this pull request. This helps you review your changes on a staging server. Changes to the data directory are not included in this table.

Source	Review	Production	What Changed
pages/setting-up-a-github-pages-site-with-jekyll/about-github-pages-and-jekyll.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14	fpt ghec ghes@ 3.17 3.16 3.15 3.14	from reusable
pages/setting-up-a-github-pages-site-with-jekyll/about-jekyll-build-errors-for-github-pages-sites.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14	fpt ghec ghes@ 3.17 3.16 3.15 3.14	from reusable
pages/setting-up-a-github-pages-site-with-jekyll/adding-a-theme-to-your-github-pages-site-using-jekyll.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14	fpt ghec ghes@ 3.17 3.16 3.15 3.14	from reusable
pages/setting-up-a-github-pages-site-with-jekyll/adding-content-to-your-github-pages-site-using-jekyll.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14	fpt ghec ghes@ 3.17 3.16 3.15 3.14	from reusable
pages/setting-up-a-github-pages-site-with-jekyll/creating-a-github-pages-site-with-jekyll.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14	fpt ghec ghes@ 3.17 3.16 3.15 3.14	from reusable
pages/setting-up-a-github-pages-site-with-jekyll/setting-a-markdown-processor-for-your-github-pages-site-using-jekyll.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14	fpt ghec ghes@ 3.17 3.16 3.15 3.14	from reusable
pages/setting-up-a-github-pages-site-with-jekyll/testing-your-github-pages-site-locally-with-jekyll.md	fpt ghec ghes@ 3.17 3.16 3.15 3.14	fpt ghec ghes@ 3.17 3.16 3.15 3.14	from reusable

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

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[Sharra-writes]

@0xdevalias Thanks for doing this! I'll get it added to the merge queue shortly.

[github-actions]

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