chore: point towards the master branch for the CI badge
chore: point towards the master branch for the CI badge

Reference: https://docs.github.com/en/actions/managing-workflow-runs/adding-a-workflow-status-badge#using-the-branch-parameter

socketio/engine.io-client,Automattic/engine.io-client,socketio/engine.io-client,socketio/engine.io-client