Add missing semicolon

Author: dupski

content/documentation/master/schema.md

@@ -292,7 +292,7 @@ To make a programmatically-generated schema executable, you can just instantiate
             .build();
 
     // Make the schema executable
-    GraphQL executor = GraphQL.newGraphQL(graphQLSchema).build()
+    GraphQL executor = GraphQL.newGraphQL(graphQLSchema).build();
     ExecutionResult executionResult = executor.execute("{hello}");
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