README.md: fix build badges

Author: tarcieri

README.md

@@ -13,9 +13,9 @@ and can be easily used for bare-metal or lightweight WebAssembly programming.
 
 | Name        | Algorithm | Crates.io | Documentation | Build |
 |-------------|-----------|-----------|---------------|-------|
-| [`dsa`]     | [Digital Signature Algorithm](https://en.wikipedia.org/wiki/Digital_Signature_Algorithm) | [![crates.io](https://img.shields.io/crates/v/dsa.svg)](https://crates.io/crates/dsa) | [![Documentation](https://docs.rs/dsa/badge.svg)](https://docs.rs/dsa) | [![dsa build](https://github.com/RustCrypto/signatures/workflows/dsa/badge.svg?branch=master&event=push)](https://github.com/RustCrypto/signatures/actions?query=workflow%3Adsa)
-| [`ecdsa`]   | [Elliptic Curve DSA](https://en.wikipedia.org/wiki/Elliptic_Curve_Digital_Signature_Algorithm) | [![crates.io](https://img.shields.io/crates/v/ecdsa.svg)](https://crates.io/crates/ecdsa) | [![Documentation](https://docs.rs/ecdsa/badge.svg)](https://docs.rs/ecdsa) | [![ecdsa build](https://github.com/RustCrypto/signatures/workflows/ecdsa/badge.svg?branch=master&event=push)](https://github.com/RustCrypto/signatures/actions?query=workflow%3Aecdsa) |
-| [`ed25519`] | [EdDSA for Curve25519](https://en.wikipedia.org/wiki/EdDSA#Ed25519) | [![crates.io](https://img.shields.io/crates/v/ed25519.svg)](https://crates.io/crates/ed25519) | [![Documentation](https://docs.rs/ed25519/badge.svg)](https://docs.rs/ed25519) | [![ed25519 build](https://github.com/RustCrypto/signatures/workflows/ed25519/badge.svg?branch=master&event=push)](https://github.com/RustCrypto/signatures/actions?query=workflow%3Aed25519)
+| [`dsa`]     | [Digital Signature Algorithm](https://en.wikipedia.org/wiki/Digital_Signature_Algorithm) | [![crates.io](https://img.shields.io/crates/v/dsa.svg)](https://crates.io/crates/dsa) | [![Documentation](https://docs.rs/dsa/badge.svg)](https://docs.rs/dsa) | [![dsa build](https://github.com/RustCrypto/signatures/actions/workflows/dsa.yml/badge.svg)](https://github.com/RustCrypto/signatures/actions/workflows/dsa.yml)
+| [`ecdsa`]   | [Elliptic Curve DSA](https://en.wikipedia.org/wiki/Elliptic_Curve_Digital_Signature_Algorithm) | [![crates.io](https://img.shields.io/crates/v/ecdsa.svg)](https://crates.io/crates/ecdsa) | [![Documentation](https://docs.rs/ecdsa/badge.svg)](https://docs.rs/ecdsa) | [![ecdsa build](https://github.com/RustCrypto/signatures/actions/workflows/ecdsa.yml/badge.svg)](https://github.com/RustCrypto/signatures/actions/workflows/ecdsa.yml) |
+| [`ed25519`] | [EdDSA for Curve25519](https://en.wikipedia.org/wiki/EdDSA#Ed25519) | [![crates.io](https://img.shields.io/crates/v/ed25519.svg)](https://crates.io/crates/ed25519) | [![Documentation](https://docs.rs/ed25519/badge.svg)](https://docs.rs/ed25519) | [![ed25519 build](https://github.com/RustCrypto/signatures/actions/workflows/ed25519.yml/badge.svg)](https://github.com/RustCrypto/signatures/actions/workflows/ed25519.yml)
 | [`ed448`] | [EdDSA for Curve448](https://en.wikipedia.org/wiki/EdDSA#Ed448) | [![crates.io](https://img.shields.io/crates/v/ed448-signature.svg)](https://crates.io/crates/ed448-signature) | [![Documentation](https://docs.rs/ed448-signature/badge.svg)](https://docs.rs/ed448-signature) | [![ed448 build](https://github.com/RustCrypto/signatures/actions/workflows/ed448.yml/badge.svg)](https://github.com/RustCrypto/signatures/actions/workflows/ed448.yml)
 | [`lms`] | [Leighton-Micali Signature](https://datatracker.ietf.org/doc/html/rfc8554) | [![crates.io](https://img.shields.io/crates/v/lms-signature.svg)](https://crates.io/crates/lms-signature) | [![Documentation](https://docs.rs/lms-signature/badge.svg)](https://docs.rs/ed25519) | [![lms build](https://github.com/RustCrypto/signatures/actions/workflows/lms.yml/badge.svg)](https://github.com/RustCrypto/signatures/actions/workflows/lms.yml)
 | [`ml-dsa`] | [Module Lattice DSA](https://csrc.nist.gov/pubs/fips/204/final) | [![crates.io](https://img.shields.io/crates/v/ml-dsa.svg)](https://crates.io/crates/ml-dsa) | [![Documentation](https://docs.rs/ml-dsa/badge.svg)](https://docs.rs/ml-dsa) | [![lms build](https://github.com/RustCrypto/signatures/actions/workflows/ml-dsa.yml/badge.svg)](https://github.com/RustCrypto/signatures/actions/workflows/lms.yml)