diff --git a/book/exercises/005a.md b/book/exercises/005a.md
index 588b0f2..355e9e2 100644
--- a/book/exercises/005a.md
+++ b/book/exercises/005a.md
@@ -30,7 +30,8 @@ Can you include a page from someone else’s book into your own using `external:
 3. Save the changes, commit, and push them.
 
 
-````{admonition} Example: `_toc.yml` snippet
+````{admonition} Example
+  `_toc.yml` snippet:
 
   ```yaml
   format: jb-book