docs: use main branch for badge

README.md

@@ -5,7 +5,7 @@
   <strong>The world's easiest, most powerful stock checker</strong>
 </p>
 <p align="center">
-  <a href="https://github.com/jef/streetmerchant/actions/workflows/ci.yaml"><img src="https://img.shields.io/github/actions/workflow/status/jef/streetmerchant/ci.yaml?label=Continuous%20Integration&logo=github&logoColor=white" /></a>
+  <a href="https://github.com/jef/streetmerchant/actions/workflows/ci.yaml"><img src="https://img.shields.io/github/actions/workflow/status/jef/streetmerchant/ci.yaml?branch=main&label=Continuous%20Integration&logo=github&logoColor=white" /></a>
   <a href="https://discord.gg/gbVY4vB9JF"><img src="https://img.shields.io/discord/773913070665859073?label=Discord&logo=discord&logoColor=white" /></a>
 </p>
 <p align="center">