README.md in browser_sniffer-2.3.0 vs README.md in browser_sniffer-2.4.0

- old
+ new

@@ -1,5 +1,5 @@
-[![Build Status](https://github.com/Shopify/browser_sniffer/actions/workflows/test.yml/badge.svg?branch=master)](https://github.com/Shopify/browser_sniffer/actions/workflows/test.yml)
+[![Build Status](https://github.com/Shopify/browser_sniffer/actions/workflows/test.yml/badge.svg?branch=main)](https://github.com/Shopify/browser_sniffer/actions/workflows/test.yml)
 [![Gem Version](https://badge.fury.io/rb/browser_sniffer.png)](http://badge.fury.io/rb/browser_sniffer)
 
 # BrowserSniffer
 
 ## Description