core: rename master branch to main

README.md

@@ -1,21 +1,23 @@
 # php-I18n-L10n
+
 PHP library/api to provide Internationalisation and Localisation
 
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/0e211604213247da98198bb1f894a92e)](https://www.codacy.com/app/wdes/php-I18n-L10n?utm_source=github.com&utm_medium=referral&utm_content=wdes/php-I18n-L10n&utm_campaign=Badge_Grade)
-![Lint and analyse files](https://github.com/wdes/php-I18n-L10n/workflows/Lint%20and%20analyse%20files/badge.svg?branch=master)
-![Run phpunit tests](https://github.com/wdes/php-I18n-L10n/workflows/Run%20phpunit%20tests/badge.svg?branch=master)
-[![codecov](https://codecov.io/gh/wdes/php-I18n-L10n/branch/master/graph/badge.svg)](https://codecov.io/gh/wdes/php-I18n-L10n)
+![Lint and analyse files](https://github.com/wdes/php-I18n-L10n/workflows/Lint%20and%20analyse%20files/badge.svg?branch=main)
+![Run phpunit tests](https://github.com/wdes/php-I18n-L10n/workflows/Run%20phpunit%20tests/badge.svg?branch=main)
+[![codecov](https://codecov.io/gh/wdes/php-I18n-L10n/branch/main/graph/badge.svg)](https://codecov.io/gh/wdes/php-I18n-L10n)
 [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fwdes%2Fphp-I18n-L10n.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2Fwdes%2Fphp-I18n-L10n?ref=badge_shield)
 [![HitCount](https://hits.dwyl.com/wdes/php-I18n-L10n.svg?style=flat)](https://hits.dwyl.com/wdes/php-I18n-L10n)
 ![Packagist](https://img.shields.io/packagist/l/wdes/php-I18n-L10n.svg)
 [![Latest Stable Version](https://poser.pugx.org/wdes/php-I18n-L10n/v/stable)](https://packagist.org/packages/wdes/php-I18n-L10n)
 
 ## License
+
 [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fwdes%2Fphp-I18n-L10n.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2Fwdes%2Fphp-I18n-L10n?ref=badge_large)
 
 ## How to use
 
-```
+```sh
 composer require wdes/php-i18n-l10n
 ```
 

codecov.yml

@@ -1,5 +1,5 @@
 codecov:
   notify:
     require_ci_to_pass: yes
-    strict_yaml_branch: master
-    bot: codecov-bot-wdes
+    strict_yaml_branch: main
+    bot: codecov-bot-wdes