Update README.adoc

[ci skip]

README.adoc

@@ -14,7 +14,7 @@
 :url-nvm-install: {url-nvm}#installation
 :url-source-maps: https://developer.mozilla.org/en-US/docs/Tools/Debugger/How_to/Use_a_source_map
 
-image:https://github.com/feelpp/course.prepost/workflows/CI/badge.svg[CI]
+image::https://github.com/feelpp/antora-ui/actions/workflows/ci.yml/badge.svg[Generate Antora UI with Gulp, link=https://github.com/feelpp/antora-ui/actions/workflows/ci.yml]
 
 This project produces a UI bundle that can be used by {url-antora}[Antora] to generate a documentation site.
 You can see a preview of the UI at {url-preview}.