fix(tanstackstart): added missing imports, highlights, and typos (#13301)

Author: nikolovlazar

docs/platforms/javascript/guides/tanstackstart-react/index.mdx

@@ -128,9 +128,10 @@ Sentry.init({
 
 Wrap TanStack Start's `createRootRoute` function using `wrapCreateRootRouteWithSentry` to apply tracing to Server-Side Rendering (SSR):
 
-```tsx {filename:app/routes/__root.tsx} {5}
+```tsx {filename:app/routes/__root.tsx} {3,6}
 import type { ReactNode } from "react";
 import { createRootRoute } from "@tanstack/react-router";
+import { wrapCreateRootRouteWithSentry } from "@sentry/tanstackstart-router";
 
 // (Wrap `createRootRoute`, not its return value!)
 export const Route = wrapCreateRootRouteWithSentry(createRootRoute)({
@@ -191,7 +192,7 @@ class MyErrorBoundary extends React.Component {
   // ...
 }
 
-export const MySentryWrappedErrorBoundary = withErrorBoundary(MyErrorBoundary, {
+export const MySentryWrappedErrorBoundary = Sentry.withErrorBoundary(MyErrorBoundary, {
   // ... sentry error wrapper options
 });
 ```