docs: fix badge URL

Author: Alan Shaw

README.md

@@ -1,7 +1,7 @@
 # freeway
 
 <p>
-  <a href="https://github.com/web3-storage/freeway/actions/workflows/release.yml"><img alt="GitHub Workflow Status" src="https://img.shields.io/github/workflow/status/web3-storage/freeway/Release?style=for-the-badge" /></a>
+  <a href="https://github.com/web3-storage/freeway/actions/workflows/release.yml"><img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/web3-storage/freeway/test.yml?branch=main&style=for-the-badge" /></a>
   <a href="https://discord.com/channels/806902334369824788/864892166470893588"><img src="https://img.shields.io/badge/chat-discord?style=for-the-badge&logo=discord&label=discord&logoColor=ffffff&color=7389D8" /></a>
   <a href="https://github.com/web3-storage/freeway/blob/main/LICENSE.md"><img alt="License: Apache-2.0 OR MIT" src="https://img.shields.io/badge/LICENSE-Apache--2.0%20OR%20MIT-yellow?style=for-the-badge" /></a>
 </p>