Fix site URL and baseurl for custom domain

Author: alexcolbeck1

docs/_config.yml

@@ -22,8 +22,8 @@ title: NHS Notify CMS
 # email: [email protected]
 description: >- # this means to ignore newlines until "baseurl:"
   NHS Notify Web CMS
-baseurl: "/nhs-notify-web-cms" # the subpath of your site, e.g. /blog
-url: "https://nhsdigital.github.io" # the base hostname & protocol for your site, e.g. http://example.com
+baseurl: "" # the subpath of your site, e.g. /blog
+url: "https://notify.nhs.uk" # the base hostname & protocol for your site, e.g. http://example.com
 
 collections_dir: collections