Change default branch from 'main' to 'master' in build-deploy workflow

Author: DeadpoolX7

.github/workflows/build-deploy.yml

@@ -8,7 +8,7 @@ on:
       - 'generate.js'
       - '.github/workflows/build-deploy.yml'
     branches:
-      - main
+      - master
 
 jobs:
   build-deploy: