Update hash link to scroll to right section of page (#7161)

* Update hash link to scroll to right section of page

Fix for #7154

* update based on feedback

Author: Chuloo

www/src/data/sidebars/tutorial-links.yaml

@@ -19,7 +19,7 @@
         - title: Install the Gatsby CLI
           link: /tutorial/part-zero/#install-the-gatsby-cli
         - title: Create a Gatsby site
-          link: /tutorial/part-zero/#create-a-gatsby-site
+          link: /tutorial/part-zero/#create-a-site
         - title: Set up a code editor
           link: /tutorial/part-zero/#set-up-a-code-editor
     - title: 1. Get to know Gatsby building blocks