Update README.md

specify url for build-test badge to go

README.md

@@ -8,7 +8,7 @@ Binaries available in [releases](https://github.com/jdrews/logstation/releases).
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) 
 [![Security Rating](https://sonarcloud.io/api/project_badges/measure?project=jdrews_logstation&metric=security_rating)](https://sonarcloud.io/summary/new_code?id=jdrews_logstation)
 [![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=jdrews_logstation&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=jdrews_logstation)
-![Build/Test](https://github.com/jdrews/logstation/actions/workflows/build-test.yml/badge.svg)
+[![Build/Test](https://github.com/jdrews/logstation/actions/workflows/build-test.yml/badge.svg)](https://github.com/jdrews/logstation/actions/workflows/build-test.yml)