diff --git a/packages/gatsby-remark-custom-blocks/README.md b/packages/gatsby-remark-custom-blocks/README.md
index 33c298a051314..a8b81f55288f4 100644
--- a/packages/gatsby-remark-custom-blocks/README.md
+++ b/packages/gatsby-remark-custom-blocks/README.md
@@ -16,11 +16,11 @@ plugins: [
     options: {
       plugins: [
         {
-          resolve: 'gatsby-remark-custom-blocks',
+          resolve: "gatsby-remark-custom-blocks",
           options: {
             blocks: {
-              danger: 'custom-block-danger',
-              info: 'custom-block-info',
+              danger: "custom-block-danger",
+              info: "custom-block-info",
             },
           },
         },
diff --git a/packages/gatsby-remark-custom-blocks/src/__tests__/index.js b/packages/gatsby-remark-custom-blocks/src/__tests__/index.js
index 046d17b3453cf..cc3b2e3efdf37 100644
--- a/packages/gatsby-remark-custom-blocks/src/__tests__/index.js
+++ b/packages/gatsby-remark-custom-blocks/src/__tests__/index.js
@@ -23,8 +23,7 @@ describe(`gatsby-remark-custom-blocks`, () => {
 [[someType]]
 | content
 [[anotherType]]
-| content`
-    )
+| content`)
     expect(find(markdownAST, { type: `someTypeCustomBlock` })).toBeTruthy()
     expect(find(markdownAST, { type: `anotherTypeCustomBlock` })).toBeTruthy()
   })