Add middleware description and update how to run snippet

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

@@ -50,7 +50,9 @@ Sentry.init({
 
 ### Instrumentation
 
-Complete the setup by adding the Sentry middleware to your `src/middleware.ts` file. If you don't have a `src/middleware.ts` file yet, create one:
+The Sentry SDK provides [middleware lifecycle](https://docs.solidjs.com/solid-start/advanced/middleware) handlers to enhance data collected by Sentry on the server side by enabling distributed tracing between the client and server.
+
+Complete the setup by adding `sentryBeforeResponseMiddleware` to your `src/middleware.ts` file. If you don't have a `src/middleware.ts` file yet, create one:
 
 ```typescript {filename:src/middleware.ts}
 import { sentryBeforeResponseMiddleware } from '@sentry/solidstart/middleware';
@@ -75,9 +77,7 @@ export default defineConfig({
 });
 ```
 
-The Sentry middleware enhances the data collected by Sentry on the server side by enabling distributed tracing between the client and server.
-
-If you previously added the `solidRouterBrowserTracingIntegration` integration in `src/entry-client.tsx`, wrap your Solid Router with `withSentryRouterRouting`.
+If you previously added the `solidRouterBrowserTracingIntegration` integration to `Sentry.init` in `src/entry-client.tsx`, wrap your Solid Router with `withSentryRouterRouting`.
 This creates a higher order component, which will enable Sentry to collect navigation spans.
 
 ```tsx {filename:app.tsx}
@@ -98,16 +98,13 @@ export default function App() {
 
 ### Run your application
 
-Add an `--import` flag to the `NODE_OPTIONS` environment variable wherever you run your application.
+Add an `--import` flag to the `NODE_OPTIONS` environment variable wherever you run your application to import `public/instrument.server.mjs`.
 
-```bash {tabTitle: npm}
-NODE_OPTIONS='--import=./public/instrument.server.mjs npm start
-```
+For example, update your scripts in `package.json`.
 
-```bash {tabTitle: yarn}
-NODE_OPTIONS='--import=./public/instrument.server.mjs yarn start
-```
-
-```bash {tabTitle: pnpm}
-NODE_OPTIONS='--import=./public/instrument.server.mjs pnpm start
-```
+```json {filename:package.json}
+{
+  "scripts": {
+    "start": "NODE_OPTIONS='--import ./public/instrument.server.mjs' vinxi start",
+  }
+}