updated workflows

.github/workflows/06-expressions.yml

@@ -1,7 +1,8 @@
 # This is a basic workflow to help you get started with Actions
-
 name: 06 Expressions
 
+# https://docs.github.com/en/actions/learn-github-actions/expressions
+
 # Controls when the workflow will run
 on:
   # Triggers the workflow on push or pull request events but only for the main branch