Rename master branch to main

Author: sindresorhus

readme.md

@@ -14,7 +14,7 @@
 
 > Human-friendly and powerful HTTP request library for Node.js
 
-[![Coverage Status](https://codecov.io/gh/sindresorhus/got/branch/master/graph/badge.svg)](https://codecov.io/gh/sindresorhus/got/branch/master)
+[![Coverage Status](https://codecov.io/gh/sindresorhus/got/branch/main/graph/badge.svg)](https://codecov.io/gh/sindresorhus/got/branch/main)
 [![Downloads](https://img.shields.io/npm/dm/got.svg)](https://npmjs.com/got)
 [![Install size](https://packagephobia.now.sh/badge?p=got)](https://packagephobia.now.sh/result?p=got)