Update README.md

Adjust stage 2 badge

Author: davedbase

packages/sse/README.md

@@ -6,7 +6,7 @@
 
 [![size](https://img.shields.io/bundlephobia/minzip/@solid-primitives/sse?style=for-the-badge&label=size)](https://bundlephobia.com/package/@solid-primitives/sse)
 [![version](https://img.shields.io/npm/v/@solid-primitives/sse?style=for-the-badge)](https://www.npmjs.com/package/@solid-primitives/sse)
-[![stage](https://img.shields.io/endpoint?style=for-the-badge&url=https%3A%2F%2Fraw.githubusercontent.com%2Fsolidjs-community%2Fsolid-primitives%2Fmain%2Fassets%2Fbadges%2Fstage-0.json)](https://github.com/solidjs-community/solid-primitives#contribution-process)
+[![stage](https://img.shields.io/endpoint?style=for-the-badge&url=https%3A%2F%2Fraw.githubusercontent.com%2Fsolidjs-community%2Fsolid-primitives%2Fmain%2Fassets%2Fbadges%2Fstage-2.json)](https://github.com/solidjs-community/solid-primitives#contribution-process)
 
 Primitives for [Server-Sent Events](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events) using the browser's built-in `EventSource` API.