Add a broken link

Author: brian-rose

README.md

@@ -4,6 +4,9 @@
 
 **HI EVERYBODY**
 
+*Here's a [broken link](https://cookbooks.projectpythia.org/GreatCookbook)*
+
+
 [![nightly-build](https://github.com/ProjectPythiaCookbooks/cookbook-template/actions/workflows/nightly-build.yaml/badge.svg)](https://github.com/ProjectPythiaCookbooks/cookbook-template/actions/workflows/nightly-build.yaml)
 [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/ProjectPythiaCookbooks/cookbook-template/main?labpath=notebooks)