Missing 'filter' keyword for operation

Author: DerekDomino

docs/tutorial/part-four/index.md

@@ -998,7 +998,7 @@ export default ({ data }) => {
 
 export const query = graphql`
   query BlogPostQuery($slug: String!) {
-    markdownRemark(fields: { slug: { eq: $slug } }) {
+    markdownRemark(filter: {fields: { slug: { eq: $slug } }}) {
       html
       frontmatter {
         title