docs(github): fix build status badge in README.md

Author: jbms

README.md

@@ -2,7 +2,7 @@
 
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![PyPI](https://img.shields.io/pypi/v/neuroglancer)](https://pypi.org/project/neuroglancer)
-![Build](https://github.com/google/neuroglancer/workflows/Build/badge.svg)
+![Build](https://github.com/google/neuroglancer/actions/workflows/build.yml/badge.svg)
 [![DOI](https://zenodo.org/badge/59798355.svg)](https://zenodo.org/badge/latestdoi/59798355)
 
 Neuroglancer is a WebGL-based viewer for volumetric data. It is capable of displaying arbitrary (non axis-aligned) cross-sectional views of volumetric data, as well as 3-D meshes and line-segment based models (skeletons).