Fix badge

Author: flekschas

README.md

@@ -1,7 +1,7 @@
 # WebGl 2D Scatterplot with Regl
 
 [![npm version](https://img.shields.io/npm/v/regl-scatterplot.svg?color=1a8cff&style=flat-square)](https://www.npmjs.com/package/regl-scatterplot)
-[![build status](https://img.shields.io/github/workflow/status/flekschas/regl-scatterplot/build?color=139ce9&style=flat-square)](https://github.com/flekschas/regl-scatterplot/actions?query=workflow%3Abuild)
+[![build status](https://img.shields.io/github/actions/workflow/status/flekschas/regl-scatterplot/build.yml?branch=master&color=139ce9&style=flat-square)](https://github.com/flekschas/regl-scatterplot/actions?query=workflow%3Abuild)
 [![file size](http://img.badgesize.io/https://unpkg.com/regl-scatterplot/dist/regl-scatterplot.min.js?compression=gzip&color=0dacd4&style=flat-square)](https://bundlephobia.com/result?p=regl-scatterplot)
 [![code style prettier](https://img.shields.io/badge/code_style-prettier-06bcbe.svg?style=flat-square)](https://github.com/prettier/prettier)
 [![regl-scatterplot demo](https://img.shields.io/badge/demo-online-00cca9.svg?style=flat-square)](https://flekschas.github.io/regl-scatterplot/)