autogenerate frontmatter (#34744)

content/graphql/reference/mutations.md

@@ -11,6 +11,7 @@ versions:
   ghae: '*'
 topics:
   - API
+autogenerated: true
 ---
 
 ## About mutations
@@ -21,4 +22,5 @@ For more information, see "[About mutations](/graphql/guides/forming-calls-with-
 
 {% data reusables.projects.graphql-ghes %}
 
+
 <!-- Content after this section is automatically generated -->