chore: rename master branch to main

.github/workflows/nodejs.yml

@@ -3,13 +3,12 @@ name: Node.js CI
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 
 jobs:
   nodejs:
     # Documentation: https://github.com/zakodium/workflows#nodejs-ci
     uses: zakodium/workflows/.github/workflows/nodejs.yml@nodejs-v1
     with:
-      node-version-matrix: '[14, 16]'
       test-setup-command: 'npm run build && node dist/ml.js && node dist/ml.min.js'

.github/workflows/release.yml

@@ -3,7 +3,7 @@ name: Release
 on:
   push:
     branches:
-      - master
+      - main
 
 jobs:
   release:

CONTRIBUTING.md

@@ -99,7 +99,7 @@ parameter is the object returned by an earlier call of `toJSON`.
 
 ## Commit Guidelines
 
-The rules are based on the [AngularJS commit guidelines](https://github.com/angular/angular.js/blob/master/CONTRIBUTING.md#commit). This leads to **more readable messages** that are easy to follow when looking through the **project history**.
+The rules are based on the [AngularJS commit guidelines](https://github.com/angular/angular.js/blob/main/CONTRIBUTING.md#commit). This leads to **more readable messages** that are easy to follow when looking through the **project history**.
 
 ### Commit Message Format
 Each commit message consists of a **header**, a **body** and a **footer**.  The header has a special