README: simplify GitHub Actions trigger description

README.md

@@ -42,14 +42,13 @@ talosctl upgrade \
 
 ### Using GitHub Actions
 
-The CI workflow builds and publishes images automatically. It can be triggered two ways:
+The CI workflow builds and publishes images automatically. It is triggered when you push a version tag:
 
 - **Push a tag** matching `v*.*.*` — this triggers the full build and creates a GitHub Release:
   ```bash
   git tag v1.11.5-cm5
   git push origin v1.11.5-cm5
   ```
-- **Manual run** — go to Actions → build → "Run workflow" to trigger a build without creating a release.
 
 ### Local build