UG -> Getting Started: Make it more user-friendly by adding Node.js/npm instructions

[seah-minlong]

What is the purpose of this pull request?

• Documentation update
• Bug fix
• Feature addition or enhancement
• Code maintenance
• DevOps
• Improve developer experience
• Others, please explain:

Fixes #2575

Overview of changes:

• Adds guide on installing Node.js and npm
• Rephrased some sentences in Getting Started -> UG

Anything you'd like to highlight/discuss:
The Node LTS Error mentioned in #2575 has been fixed in PR #2572, but the website MarkBind Getting Started page has not been updated to reflect this change yet.

Testing instructions:

Proposed commit message: (wrap lines at 72 characters)
Add installing node.js and npm instructions to Getting Started UG

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Checklist: ☑️

• Updated the documentation for feature additions and enhancements
• Added tests for bug fixes or features
• Linked all related issues
• No unrelated changes

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Reviewer checklist:

Indicate the SEMVER impact of the PR:

• Major (when you make incompatible API changes)
• Minor (when you add functionality in a backward compatible manner)
• Patch (when you make backward compatible bug fixes)

At the end of the review, please label the PR with the appropriate label: r.Major, r.Minor, r.Patch.

Breaking change release note preparation (if applicable):

• To be included in the release note for any feature that is made obsolete/breaking

Give a brief explanation note about:

• what was the old feature that was made obsolete
• any replacement feature (if any), and
• how the author should modify his website to migrate from the old feature to the replacement feature (if possible).

[gerteck]

Thanks for the PR!

Regarding the Node LTS Error, it has already been removed, and it is viewable on the latest documentation linked in the repository readme.

The MarkBind website for the current MarkBind release is at https://markbind.org/.
The website for the latest master branch (not yet released to the public) is at https://markbind-master.netlify.app/.

The last time the MarkBind website was updated was on the date of the latest MarkBind release, so there is a difference between the two, although I should have edited the relevant portion in the user guide with the PR that fixed the issue.

For guidance on how to install npm / node, maybe you could explore the use of a expandable panel, since it would be optional (but good to know) information

Is there any purpose behind the rephrasing of the instructions? Seems slightly unnecessary

[damithc]

As this section is applicable to only some readers, perhaps put it inside a collapsed panel or a modal?

[seah-minlong]

Thanks for the review! @gerteck also suggested the use of an expandable panel so I'll implement it that way

[seah-minlong]

Thanks for clarifying about the Node LTS error issue @gerteck!

I think the expandable panel is a great suggestion, I shall add that in 😄 .

Regarding the rephrasing, I was aiming to make the instructions feel less intimidating for beginners, but if you think it doesn’t add much value, I can revert or tweak it. Just let me know!