chore: update website for preview links (#2085)

* chore: update website for preview links

* fix formatting

website/static/admin/config.yml

@@ -3,6 +3,8 @@ backend:
   repo: netlify/netlify-cms
   squash_merges: true
 
+site_url: "https://www.netlifycms.org"
+
 publish_mode: editorial_workflow
 
 media_folder: "website/static/img" # Folder where user uploaded files should go
@@ -13,6 +15,7 @@ collections: # A list of collections the CMS should be able to edit
     label: "Docs" # Used in the UI, ie.: "New Post"
     folder: "website/content/docs" # The path to the folder where the documents are stored
     create: true # Allow users to create new documents in this collection
+    preview_path: "docs/{{slug}}"
     fields: # The fields each document in this collection have
       - {label: "Title", name: "title", widget: "string", tagname: "h1"}
       - {label: "Group", name: "group", widget: "string"}
@@ -21,6 +24,7 @@ collections: # A list of collections the CMS should be able to edit
   - name: "widget_docs" # Used in routes, ie.: /admin/collections/:slug/edit
     label: "Widget Docs" # Used in the UI, ie.: "New Post"
     folder: "website/content/docs/widgets" # The path to the folder where the documents are stored
+    preview_path: "docs/widgets/{{title}}"
     create: true # Allow users to create new documents in this collection
     fields: # The fields each document in this collection have
       - {label: "Name", name: "title"}
@@ -30,6 +34,7 @@ collections: # A list of collections the CMS should be able to edit
     label: "Blog"
     label_singular: "Post"
     folder: "website/content/blog"
+    preview_path: "blog/{{year}}/{{month}}/{{title}}"
     create: true
     fields:
       - {label: "Title", name: "title", widget: "string", tagname: "h1"}