docs: make definition clearer in workspace guide

[Metehan-Altuntekin]

Description

if you have a folder with your projects named packages is easy to confuse with the actual package name being "packages".

Even though it's not impossible to understand with some thinking, we can make it clearer with this commit.

No testing required, this is just a docs commit.

Please don't delete this checklist! Before submitting the PR, please make sure you do the following:

• It's really useful if your PR references an issue where it is discussed ahead of time. If the feature is substantial or introduces breaking changes without a discussion, PR might be closed.
• Ideally, include a test that fails without this PR but passes with it.
• Please, don't make changes to pnpm-lock.yaml unless you introduce a new test example.

Tests

• [ ] Run the tests with pnpm test:ci.

Documentation

• If you introduce new functionality, document it. You can run documentation with pnpm run docs command.

Changesets

• Changes in changelog are generated from PR name. Please, make sure that it explains your changes in an understandable manner. Please, prefix changeset messages with feat:, fix:, perf:, docs:, or chore:.

[netlify]

✅ Deploy Preview for fastidious-cascaron-4ded94 ready!

Name	Link
🔨 Latest commit	329bbb6
🔍 Latest deploy log	https://app.netlify.com/sites/fastidious-cascaron-4ded94/deploys/659eccd9e0eb9c0008f7484f
😎 Deploy Preview	https://deploy-preview-4926--fastidious-cascaron-4ded94.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.