docs: deprecate incomplete Julia style guide

[SuYaSh-PaThAk04]

Resolves #9759 .

Description

What is the purpose of this pull request?

This pull request:

• deprecates the incomplete Julia style guide located at:

docs/style-guides/julia/README.md
now it works -

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• Broken / outdated link to Julia Style Guide (docs/style-guides/julia/README.md) #9759

Questions

Any questions for reviewers of this pull request?

No.

Other

Any other information relevant to this pull request? This may include screenshots, references, and/or implementation notes.

No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

AI Assistance

When authoring the changes proposed in this PR, did you use any kind of AI assistance?

• Yes
• No

If you answered "yes" above, how did you use AI assistance?

• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
• Documentation (including examples)
• Research and understanding

Disclosure

If you answered "yes" to using AI assistance, please provide a short disclosure indicating how you used AI assistance. This helps reviewers determine how much scrutiny to apply when reviewing your contribution. Example disclosures: "This PR was written primarily by Claude Code." or "I consulted ChatGPT to understand the codebase, but the proposed changes were fully authored manually by myself.".

{{TODO: add disclosure if applicable}}

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@stdlib-js/reviewers

[Om-A-osc]

@SuYaSh-PaThAk04 A PR for this issue already exists (#9706).
It would be good to let that PR be reviewed and merged instead of opening a duplicate one.