ref(astro): Improve Getting Started introduction (#8685)

Author: Lms24

src/platform-includes/getting-started-install/javascript.astro.mdx

@@ -1,9 +1,17 @@
-We recommend installing the SDK by using the `astro` CLI:
+Install the SDK by using the `astro` CLI:
 
-```bash
+```bash {tabTitle:npm}
 npx astro add @sentry/astro
 ```
 
+```bash {tabTitle:yarn}
+yarn astro add @sentry/astro
+```
+
+```bash {tabTitle:pnpm}
+pnpm astro add @sentry/astro
+```
+
 The `astro` CLI installs the SDK package and adds the Sentry integration to your `astro.config.mjs` file.
 
 To finish the setup, configure the Sentry integration.

src/platform-includes/getting-started-primer/javascript.astro.mdx

@@ -1,4 +1,6 @@
-Sentry's Astro SDK enables automatic reporting of errors and performance data.
+Sentry's Astro SDK enables automatic reporting of errors and performance data in your Astro application.
+Our Astro integration instruments both the client as well as the server side of your Astro application.
+This page walks you through adding Sentry to your Astro project, configuring it, adding readable stack traces, and verifying your setup.
 
 <Alert>
 
@@ -7,8 +9,13 @@ Please report any issues you encounter in our [Github Repository](https://github
 
 </Alert>
 
-## Compatibility
+## Prerequisites
 
-The minimum supported Astro version is `3.0.0`.
-This SDK currently only works on Node runtimes.
-Non-Node runtimes, like Vercel's Edge runtime or Cloudflare Pages, are currently not supported.
+Before we get started, make sure you have the following:
+
+- A Sentry account.
+  - Don't have an account yet? Head over to [sentry.io](https://sentry.io/signup/), then return to this page.
+- An Astro project that uses Astro `3.0.0` or newer.
+- A Node runtime:
+  - This SDK currently only works on Node runtimes (e.g. Node adapter, Vercel with Lambda functions).
+    Non-Node runtimes, like Vercel's Edge runtime or Cloudflare Pages, are currently not supported.

src/platforms/javascript/common/index.mdx

@@ -1,7 +1,11 @@
 <PlatformContent includePath="getting-started-primer" />
 
+<PlatformSection notSupported={["javascript.astro"]}>
+
 On this page, we get you up and running with Sentry's SDK.
 
+</PlatformSection>
+
 <PlatformSection noGuides>
 
 <Alert level="info" title="Using a framework?">