chore(docs): rename install to getting-started (#6432)

## Checklist

- [ ] Title matches [Winglang's style guide](https://www.winglang.io/contributing/start-here/pull_requests#how-are-pull-request-titles-formatted)
- [ ] Description explains motivation and solution
- [ ] Tests added (always)
- [ ] Docs updated (only required for features)
- [ ] Added `pr/e2e-full` label if this feature requires end-to-end testing

*By submitting this pull request, I confirm that my contribution is made under the terms of the [Wing Cloud Contribution License](https://github.com/winglang/wing/blob/main/CONTRIBUTION_LICENSE.md)*.

docs/docs/01-start-here/02-installation.md → docs/docs/01-start-here/02-getting-started.md

@@ -1,10 +1,27 @@
 ---
-id: installation
-title: Installation
-keywords: [Wing installation, installation, Wing toolchain]
+id: getting-started
+title: Getting Started
+keywords: [Getting started, Wing installation, installation, Wing toolchain]
 slug: /
 ---
 
+## Welcome
+
+Welcome, it's great to see you here!
+
+As you prepare to start taking flight with Wing 😉, there are a few things you need to do to get set up.
+This guide will walk you through the steps to setup Wing on your machine, create your first project, run it in the Wing Simulator and deploy it to AWS.
+
+:::info
+
+Wing is still in active development, and we would love to hear what you think! Please ping us on [Wing Slack](https://t.winglang.io/slack), share what you want to build
+and let us know if you encounter any issues. There's also a cute channel with music recommendations 🎶
+
+:::
+
+> Did you know that you can also take Wing for a spin without installing anything?
+> Check out the [Wing Playground](https://www.winglang.io/play/).
+
 ## Prerequisite
 
 * [Node.js](https://nodejs.org/en/) v20 or later