Readme: Remove outdated publishing step

Adding the page to `$new_theme_pages` is no longer necessary as of b44b16d

readme.md

@@ -8,7 +8,7 @@ Once set up, this environment will contain some shared plugins (Jetpack, Gutenbe
 
 ### Prerequisites
 
-* Docker
+* DockerF
 * Node/npm
 * Yarn
 * Composer
@@ -168,8 +168,6 @@ Add the new page to `./env/page-manifest.json`. Use the following format, where
 },
 ```
 
-Add the page URL to `$new_theme_pages` in `./source/wp-content/mu-plugins/theme-switcher.php`.
-
 Start up the local environment using `yarn wp-env start`. Create the page in your local environment.
 
 Run `yarn build:patterns`. This creates the pattern synced from the remote page content, and creates the page template which references the new pattern. View the new page, it should use the new theme & synced content.