Change branch master to main

.ci/inc/fetch_ci_scripts.bash

@@ -4,7 +4,7 @@ function fetch_ci_scripts() {
     local inc_dir
     local inc_url
     inc_dir="$(dirname "$0")/inc"
-    inc_url="${PMD_CI_SCRIPTS_URL:-https://raw.githubusercontent.com/pmd/build-tools/master/scripts}/inc"
+    inc_url="${PMD_CI_SCRIPTS_URL:-https://raw.githubusercontent.com/pmd/build-tools/main/scripts}/inc"
 
     mkdir -p "${inc_dir}"
 

.github/workflows/build.yml

@@ -3,7 +3,6 @@ on:
   push:
     branches:
       - main
-      - master
     tags:
       - '**'
   pull_request:

README.md

@@ -1,6 +1,6 @@
 # PMD Rule Designer
 
-[![Build Status](https://github.com/pmd/pmd-designer/workflows/build/badge.svg?branch=master)](https://github.com/pmd/pmd-designer/actions?query=workflow%3Abuild)
+[![Build Status](https://github.com/pmd/pmd-designer/workflows/build/badge.svg?branch=main)](https://github.com/pmd/pmd-designer/actions?query=workflow%3Abuild)
 [![Maven Central](https://img.shields.io/maven-central/v/net.sourceforge.pmd/pmd-designer.svg)](https://maven-badges.herokuapp.com/maven-central/net.sourceforge.pmd/pmd-designer)
 [![Join the chat](https://img.shields.io/gitter/room/pmd/pmd-designer)](https://app.gitter.im/#/room/#pmd_pmd-designer:gitter.im?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 

releasing.md

@@ -1,6 +1,6 @@
 # Releasing pmd-designer
 
-1.  Checkout master branch:
+1.  Checkout main branch:
 
     ``` shell
     git clone https://github.com/pmd/pmd-designer.git
@@ -19,7 +19,7 @@
     Note: the tag will be pushed automatically.
 
     ``` shell
-    git switch master
+    git switch main
     ./mvnw release:clean
     ./mvnw release:prepare
     ```