diff --git a/docs/src/docPages/overview/upgrade-guide.md b/docs/src/docPages/overview/upgrade-guide.md
index 1b87f8c3..8ea4877c 100644
--- a/docs/src/docPages/overview/upgrade-guide.md
+++ b/docs/src/docPages/overview/upgrade-guide.md
@@ -44,7 +44,7 @@ const CustomDocument = Document.name('doc').create()
 new Editor({
   extensions: [
     CustomDocument(),
-    …
+    // …
   ]
 })
 ```