docs(README): update build shield

Author: khrynczenko

README.md

@@ -3,7 +3,7 @@ tagname
 [<img alt="github" src="https://img.shields.io/badge/github-khrynczenko/tagname-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/khrynczenko/tagname)
 [<img alt="crates.io" src="https://img.shields.io/crates/v/tagname.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/tagname)
 [<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-tagname-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/tagname)
-[<img alt="build status" src="https://img.shields.io/github/workflow/status/khrynczenko/tagname/Rust/master?style=for-the-badge" height="20">](https://github.com/khrynczenko/tagname/actions?query=branch%3Amaster)
+[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/khrynczenko/tagname/rust.yml?branch=master&style=for-the-badge" height="20">](https://github.com/khrynczenko/tagname/actions?query=branch%3Amaster)
 
 This library exports a trait called `TagName` that exposes a
 `tag_name` method which is used for retrieving a name (tag) of a currently hold variant within an `enum` value.