docs: update README to reflect default value for branch (#9)

README.md

@@ -42,7 +42,7 @@ jobs:
 | coauthor_email | string  |                             | Email used to make a co-authored commit. |
 | coauthor_name  | string  |                             | Name used to make a co-authored commit. |
 | message        | string  | 'chore: autopublish ${date}' | Commit message. |
-| branch         | string  | 'master'                    | Destination branch to push changes. |
+| branch         | string  | 'main'                    | Destination branch to push changes. |
 | empty          | boolean | false                       | Allow empty commit. |
 | force          | boolean | false                       | Determines if force push is used. |
 | tags           | boolean | false                       | Determines if `--tags` is used. |
@@ -59,4 +59,4 @@ This is a slight modification of the [ad-m/github-push-action](https://github.co
 
 ## No affiliation with GitHub Inc.
 
-GitHub are registered trademarks of GitHub, Inc. GitHub name used in this project are for identification purposes only. The project is not associated in any way with GitHub Inc. and is not an official solution of GitHub Inc. It was made available in order to facilitate the use of the site GitHub.
+GitHub are registered trademarks of GitHub, Inc. GitHub name used in this project are for identification purposes only. The project is not associated in any way with GitHub Inc. and is not an official solution of GitHub Inc. It was made available in order to facilitate the use of the site GitHub.