Improved the example of Setting an Environment Var (#2488)

Co-authored-by: Sarah Edwards <skedwards88@github.com>

Author: espipj

content/actions/reference/workflow-commands-for-github-actions.md

@@ -268,11 +268,19 @@ Creates or updates an environment variable for any actions running next in a job
 
 #### Example
 
-```bash
-echo "action_state=yellow" >> $GITHUB_ENV
+{% raw %}
 ```
-
-Running `$action_state` in a future step will now return `yellow`
+steps:
+  - name: Set the value
+    id: step_one
+    run: |
+        echo "action_state=yellow" >> $GITHUB_ENV
+  - name: Use the value
+    id: step_two
+    run: |
+        echo "${{ env.action_state }}" # This will output 'yellow'
+```
+{% endraw %}
 
 #### Multiline strings