chore: master branch is gone

Author: gforcada

README.rst

@@ -1,10 +1,10 @@
 .. -*- coding: utf-8 -*-
 
-.. image:: https://github.com/gforcada/flake8-isort/actions/workflows/tests.yml/badge.svg?branch=master
+.. image:: https://github.com/gforcada/flake8-isort/actions/workflows/tests.yml/badge.svg?branch=main
    :target: https://github.com/gforcada/flake8-isort/actions/workflows/tests.yml
 
-.. image:: https://coveralls.io/repos/gforcada/flake8-isort/badge.svg?branch=master
-   :target: https://coveralls.io/github/gforcada/flake8-isort?branch=master
+.. image:: https://coveralls.io/repos/gforcada/flake8-isort/badge.svg?branch=main
+   :target: https://coveralls.io/github/gforcada/flake8-isort?branch=main
 
 Flake8 meet isort
 =================