Fix missing new line.

Author: timward60

src/main/kotlin/graphql/kickstart/tools/MissingFieldHandler.kt

@@ -4,4 +4,4 @@ import graphql.schema.DataFetchingEnvironment
 
 interface MissingFieldHandler {
     fun resolve(env: DataFetchingEnvironment?): Any?
-}
+}

src/test/kotlin/graphql/kickstart/tools/MissingFieldResolverTest.kt

@@ -72,4 +72,4 @@ class MissingFieldResolverTest {
             return env?.getArgument("input");
         }
     }
-}
+}