Add title in Customizing the GraphQL Schema (#18584)

nickyfahey · sidharthachatterjee · commit db3f7b072a8f · 2019-10-14T10:18:38.000+01:00
diff --git a/docs/docs/schema-customization.md b/docs/docs/schema-customization.md
@@ -1,4 +1,6 @@
-# Customizing the GraphQL Schema
+---
+title: Customizing the GraphQL Schema
+---
 
 One of Gatsby's main strengths is the ability to query data from a variety of
 sources in a uniform way with GraphQL. For this to work, a GraphQL Schema must
