docs(svelte): Update getting started snippet (#12000)

Author: chargome

docs/platforms/unreal/index.mdx

@@ -78,7 +78,7 @@ PublicDependencyModuleNames.AddRange(new string[] { ..., "Sentry" });
 The minimum configuration required is the [DSN](/product/sentry-basics/dsn-explainer/) of your project:
 
 
-```bash
+``` {tabTitle: Public DSN}
 ___PUBLIC_DSN___
 ```
 

platform-includes/getting-started-config/javascript.svelte.mdx

@@ -1,15 +1,15 @@
 To use the SDK, initialize it in your Svelte entry point before bootstrapping your app. In a typical Svelte project, that is your `main.js` or `main.ts` file.
 
 
-```javascript {filename: main.js} {"onboardingOptions": {"performance": "10, 13-20", "session-replay": "11, 21-25"}}
+```javascript {filename: main.js} {"onboardingOptions": {"performance": "10, 13-20", "session-replay": "11, 23-29"}}
 import "./app.css";
 import App from "./App.svelte";
 
 import * as Sentry from "@sentry/svelte";
 
 // Initialize the Sentry SDK here
 Sentry.init({
-  dsn: "<Sentry DSN>",
+  dsn: "___PUBLIC_DSN___",
   integrations: [
     Sentry.browserTracingIntegration(),
     Sentry.replayIntegration(),

platform-includes/getting-started-config/unity.mdx

@@ -1,8 +1,9 @@
 The minimum configuration required is the [DSN](/product/sentry-basics/dsn-explainer/) to your project.
 
-
-```
-___PUBLIC_DSN___
+```json {tabTitle: Public DSN}
+{
+  "public-dsn": "___PUBLIC_DSN___"
+}
 ```
 
 Sentry can be configured via the Sentry configuration window or [programatically](/platforms/unity/configuration/options/).

platform-includes/getting-started-config/unreal.mdx

@@ -1,8 +1,10 @@
 The minimum configuration required is the [DSN](/product/sentry-basics/dsn-explainer/) of your project:
 
 
-```
-___PUBLIC_DSN___
+```json {tabTitle: Public DSN}
+{
+  "public-dsn": "___PUBLIC_DSN___"
+}
 ```
 
 <Note>