chore(docs): Fix a line so be in context (#21639)

Author: gorisanson

docs/tutorial/part-two/index.md

@@ -32,7 +32,7 @@ One of the most straightforward ways to add global styles to a site is using a g
 
 Start by creating a new Gatsby site. It may be best (especially if you're new to the command line) to close the terminal windows you used for [part one](/tutorial/part-one/) and start a new terminal session for part two.
 
-Open a new terminal window, create a new "hello world" gatsby site, and start the development server:
+Open a new terminal window, create a new "hello world" Gatsby site in a directory called `tutorial-part-two`, and then move to this new directory:
 
 ```shell
 gatsby new tutorial-part-two https://github.com/gatsbyjs/gatsby-starter-hello-world