ref(replay): add onboarding docs for astro and fix capacitor doc (#8649)

* ref(replay): add onboarding doc for astro and fix capacitor doc

* remove import

src/wizard/javascript/replay-onboarding/astro/1.install.md

@@ -0,0 +1,14 @@
+---
+name: Astro
+doc_link: https://docs.sentry.io/platforms/javascript/guides/astro/session-replay/
+support_level: production
+type: language
+---
+
+#### Install
+
+The Replay integration is already included with the Sentry Astro SDK.
+
+```bash
+npx astro add @sentry/astro
+```

src/wizard/javascript/replay-onboarding/astro/2.configure.md

@@ -0,0 +1,27 @@
+---
+name: Astro
+doc_link: https://docs.sentry.io/platforms/javascript/guides/astro/session-replay/
+support_level: production
+type: language
+---
+
+#### Configure
+
+There are several privacy and sampling options available, all of which can be set using the `integrations` constructor. Learn more about configuring Session Replay by reading the [configuration docs](https://docs.sentry.io/platforms/javascript/session-replay/). Add the following to your SDK config:
+
+```javascript
+import * as Sentry from "@sentry/astro";
+
+Sentry.init({
+  dsn: "___PUBLIC_DSN___",
+
+  // This sets the sample rate at 10%. You may want this to be 100% while
+  // in development, then sample at a lower rate in production.
+  replaysSessionSampleRate: 0.1,
+  // If the entire session is not sampled, use the below sample rate to sample
+  // sessions when an error occurs.
+  replaysOnErrorSampleRate: 1.0,
+
+  integrations: [new Sentry.Replay()],
+});
+```

src/wizard/javascript/replay-onboarding/capacitor/1.install.md

@@ -9,8 +9,8 @@ type: language
 
 ```bash
 # Using yarn
-yarn add @sentry/capacitor @sentry/replay
+yarn add @sentry/capacitor
 
 # Using npm
-npm install --save @sentry/capacitor @sentry/replay
+npm install --save @sentry/capacitor
 ```