updated request locals docs (#789)

Co-authored-by: Atila Fassina <atila@fassina.eu>
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

Author: 3 people

src/routes/solid-start/advanced/request-events.mdx

@@ -11,12 +11,14 @@ SolidStart uses `event.locals` to pass around a local context where needed.
 
 When adding fields to `event.locals`, the fields can be typed:
 
-```tsx
-declare module "@solidjs/start/server" {
-	interface RequestEventLocals {
-		myNumber: number;
-		someString: string;
-	}
+```tsx filename="global.d.ts'
+/// <reference types="@solidjs/start/env" />
+declare module App {
+  interface RequestEventLocals {
+    /**
+     * Declare your getRequestEvent().locals here
+     */
+  }
 }
 ```