Update branch name references

.github/workflows/close_invalid_prs.yml

@@ -9,19 +9,19 @@ jobs:
     if: |
       github.repository != github.event.pull_request.head.repo.full_name &&
       (
-        github.head_ref == 'master' ||
+        github.head_ref == 'main' ||
         github.event.pull_request.head.repo.owner.type != 'User'
       )
     runs-on: ubuntu-latest
     steps:
       - uses: superbrothers/close-pull-request@v3
-        id: "master_branch"
-        if: github.head_ref == 'master'
+        id: "main_branch"
+        if: github.head_ref == 'main'
         with:
-          comment: "Please do not open pull requests from the `master` branch, create a new branch instead."
+          comment: "Please do not open pull requests from the `main` branch, create a new branch instead."
 
       - uses: superbrothers/close-pull-request@v3
         id: "org_account"
-        if: github.event.pull_request.head.repo.owner.type != 'User' && steps.master_branch.outcome == 'skipped'
+        if: github.event.pull_request.head.repo.owner.type != 'User' && steps.main_branch.outcome == 'skipped'
         with:
           comment: "Please do not open pull requests from non-user accounts like organizations. Create a fork on a user account instead."

CONTRIBUTING.md

@@ -185,11 +185,11 @@ need to "save" the changes.
 
 ## Rebasing PRs
 
-Steps to rebase a PR to include the latest changes from `master`.  
+Steps to rebase a PR to include the latest changes from `main`.  
 These steps assume the `origin` remote is your fork of this repository and `upstream` is the official PaperMC repository.
 
-1. Pull the latest changes from upstreams master: `git switch main && git pull upstream main`.
-1. Checkout feature/fix branch and rebase on master: `git checkout patch-branch && git rebase main`.
+1. Pull the latest changes from upstreams main: `git switch main && git pull upstream main`.
+1. Checkout feature/fix branch and rebase on main: `git checkout patch-branch && git rebase main`.
 1. Apply updated patches: `./gradlew applyPatches`.
 1. If there are conflicts, fix them.
 1. If your PR creates new feature patches instead of modifying existing ones, ensure your newly-created patch is the last commit by either:

README.md

@@ -1,4 +1,4 @@
-Paper [![Paper Build Status](https://img.shields.io/github/actions/workflow/status/PaperMC/Paper/build.yml?branch=master)](https://github.com/PaperMC/Paper/actions)
+Paper [![Paper Build Status](https://img.shields.io/github/actions/workflow/status/PaperMC/Paper/build.yml?branch=main)](https://github.com/PaperMC/Paper/actions)
 [![Discord](https://img.shields.io/discord/289587909051416579.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2)](https://discord.gg/papermc)
 [![GitHub Sponsors](https://img.shields.io/github/sponsors/papermc?label=GitHub%20Sponsors)](https://github.com/sponsors/PaperMC)
 [![Open Collective](https://img.shields.io/opencollective/all/papermc?label=OpenCollective%20Sponsors)](https://opencollective.com/papermc)

settings.gradle.kts

@@ -24,7 +24,7 @@ if (!file(".git").exists()) {
          Built Paper jars are available for download at
          https://papermc.io/downloads/paper
          
-         See https://github.com/PaperMC/Paper/blob/master/CONTRIBUTING.md
+         See https://github.com/PaperMC/Paper/blob/main/CONTRIBUTING.md
          for further information on building and modifying Paper.
         ===================================================
     """.trimIndent()