Migrate web ide icon docs

What does this MR do and why?

A small MVC for Migrate angle icon to chevron in doc/user/proje... (#362781 - closed) where we migrate the angle icon to chevron in doc/user/project/web_ide/index.md.

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These are strongly recommended to assist reviewers and reduce the time to merge your change.

How to set up and validate locally

N/A

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Closes #362781 (closed)