chore: Build Releases badge only shows push events

Author: zonyitoo

README.md

@@ -3,7 +3,7 @@
 [![License](https://img.shields.io/github/license/zonyitoo/shadowsocks-rust.svg)](https://github.com/zonyitoo/shadowsocks-rust)
 [![Build & Test](https://github.com/shadowsocks/shadowsocks-rust/actions/workflows/build-and-test.yml/badge.svg)](https://github.com/shadowsocks/shadowsocks-rust/actions/workflows/build-and-test.yml)
 [![Build MSRV](https://github.com/shadowsocks/shadowsocks-rust/actions/workflows/build-msrv.yml/badge.svg)](https://github.com/shadowsocks/shadowsocks-rust/actions/workflows/build-msrv.yml)
-[![Build Releases](https://github.com/shadowsocks/shadowsocks-rust/actions/workflows/build-release.yml/badge.svg)](https://github.com/shadowsocks/shadowsocks-rust/actions/workflows/build-release.yml)
+[![Build Releases](https://github.com/shadowsocks/shadowsocks-rust/actions/workflows/build-release.yml/badge.svg?event=push)](https://github.com/shadowsocks/shadowsocks-rust/actions/workflows/build-release.yml)
 [![Build Nightly Releases](https://github.com/shadowsocks/shadowsocks-rust/actions/workflows/build-nightly-release.yml/badge.svg)](https://github.com/shadowsocks/shadowsocks-rust/actions/workflows/build-nightly-release.yml)
 
 [![crates.io](https://img.shields.io/crates/v/shadowsocks-rust.svg)](https://crates.io/crates/shadowsocks-rust)