docs: Fix nonsensical sentence in project structure docs (#9763)

docs/docs/gatsby-project-structure.md

@@ -31,7 +31,7 @@ Inside a Gatsby project, you may see some or all of the following folders and fi
 - **`/src`** This directory will contain all of the code related to what you will see on the front-end of your site (what you see in the browser), like your site header, or a page template. “Src” is a convention for “source code”.
 
   - **`/pages`** Components under src/pages become pages automatically with paths based on their file name. Check out the [pages docs](/docs/recipes/#creating-pages) for more detail.
-  - **`/templates`** By convention, templates used across multiple pages are Contains templates for programmatically creating pages. Check out the [templates docs](/docs/building-with-components/#page-template-components) for more detail.
+  - **`/templates`** Contains templates for programmatically creating pages. Check out the [templates docs](/docs/building-with-components/#page-template-components) for more detail.
   - **`html.js`** For custom configuration of default .cache/default_html.js. Check out the [custom html docs](/docs/custom-html/) for more detail.
 
 - **`/static`** If you put a file into the static folder, it will not be processed by Webpack. Instead it will be copied into the public folder untouched. Check out the [assets docs](https://www.gatsbyjs.org/docs/adding-images-fonts-files/#adding-assets-outside-of-the-module-system) for more detail.