Update file-system-page-creation.md

Author: blainekasten

docs/docs/file-system-page-creation.md

@@ -140,7 +140,7 @@ Assume that a `Product` model is used in two pages:
 - `/src/pages/products/{Product.name}.js`
 - `/src/pages/discounts/{Product.name}.js`
 
-If you wanted to link to the `products/{Product:name}` route from your home page, you would have a component like this:
+If you wanted to link to the `products/{Product.name}` route from your home page, you would have a component like this:
 
 ```jsx:title=/src/pages/index.js
 import { Link, graphql } from "gatsby"
@@ -152,10 +152,10 @@ export default function HomePage(props) {
 }
 
 export const query = graphql`
-  query ($id: String) {
+  query {
     allProducts {
       name
-      gatsbyPath(filePath: "/products/{Product:name}")
+      gatsbyPath(filePath: "/products/{Product.name}")
     }
   }
 }