chore: rename test file and update README badge link

Author: root4loot

Diff for: .github/workflows/test.yml renamed to .github/workflows/builld.yml

@@ -1,6 +1,6 @@
 # goutils
 
-[![GoDoc](https://pkg.go.dev/badge/github.com/root4loot/goutils)](https://pkg.go.dev/github.com/root4loot/goutils) [![Test](https://github.com/root4loot/goutils/actions/workflows/test.yml/badge.svg)](https://github.com/root4loot/goutils/actions/workflows/test.yml)
+[![GoDoc](https://pkg.go.dev/badge/github.com/root4loot/goutils)](https://pkg.go.dev/github.com/root4loot/goutils) [![Test](https://github.com/root4loot/goutils/actions/workflows/build.yml/badge.svg)](https://github.com/root4loot/goutils/actions/workflows/build.yml)
 
 
 ```sh