Update src/pages/blog/2025-06-10-graphiql-5/index.mdx

Author: dimaMachina

src/pages/blog/2025-06-10-graphiql-5/index.mdx

@@ -60,7 +60,7 @@ Thanks to the migration to Monaco Editor, another long-awaited feature has been
 implemented. The **Variables** and **Headers** editors now support comments and
 use the **JSONC** language internally.
 
-In the **Variables** and **Headers** payloads all comments are automatically
+In the **Variables** and **Headers** payloads, all comments are automatically
 stripped before the request is executed — the content in the editors **remains
 unchanged**.