fix GitHub workflow badge URL (#1096)
See https://github.com/badges/shields/issues/8671
diff --git a/README.md b/README.md
index 504b189..4bb1496 100644
--- a/README.md
+++ b/README.md
@@ -3,9 +3,9 @@
[](https://github.com/nanomsg/nanomsg/releases/latest)
[](https://github.com/nanomsg/nanomsg/blob/master/COPYING)
-[](https://github.com/nanomsg/nanomsg/actions/workflows/linux.yml)
-[](https://github.com/nanomsg/nanomsg/actions/workflows/windows.yml)
-[](https://github.com/nanomsg/nanomsg/actions/workflows/darwin.yml)
+[](https://github.com/nanomsg/nanomsg/actions/workflows/linux.yml)
+[](https://github.com/nanomsg/nanomsg/actions/workflows/windows.yml)
+[](https://github.com/nanomsg/nanomsg/actions/workflows/darwin.yml)
[](https://discord.com/channels/639573728212156478/639574516812742686)
The nanomsg library is a simple high-performance implementation of several