chore(workflow):replace the special words

Author: lijianguo

README.md

@@ -1,6 +1,6 @@
 # Drycc Registry v2
 
-[![Build Status](https://travis-ci.org/drycc/registry.svg?branch=master)](https://travis-ci.org/drycc/registry)
+[![Build Status](https://travis-ci.org/drycc/registry.svg?branch=main)](https://travis-ci.org/drycc/registry)
 [![Go Report Card](https://goreportcard.com/badge/github.com/drycc/registry)](https://goreportcard.com/report/github.com/drycc/registry)