Remove dismissive language from intro to GitHub Pages

[alex-ball]

As proposed under issue #174, here is some new wording that removes value judgements about the ease or otherwise of using GitHub Pages and Jekyll to build a website.

Closes #174.

[github-actions]

Thank you!

Thank you for your pull request 😃

🤖 This automated message can help you check the rendered files in your submission for clarity. If you have any questions, please feel free to open an issue in {sandpaper}.

If you have files that automatically render output (e.g. R Markdown), then you should check for the following:

• 🎯 correct output
• 🖼️ correct figures
• ❓ new warnings
• ‼️ new errors

Rendered Changes

🔍 Inspect the changes: https://github.com/LibraryCarpentry/lc-git/compare/md-outputs..md-outputs-PR-188

The following changes were observed in the rendered markdown documents:

 05-github-pages.md | 4 ++--
 md5sum.txt         | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

What does this mean?

If you have source files that require output and figures to be generated (e.g. R Markdown), then it is important to make sure the generated figures and output are reproducible.

This output provides a way for you to inspect the output in a diff-friendly manner so that it's easy to see the changes that occur due to new software versions or randomisation.

⏱️ Updated at 2025-08-07 14:17:35 +0000

[srerickson]

looks good!