docs: Add preview/publish page and fix formatting

fern/docs/pages/learn/docs/preview-publish/in-preview-and-publish.mdx

@@ -0,0 +1,5 @@
+---
+title: in PREVIEW AND PUBLISH
+slug: learn/docs/preview-publish/in-preview-and-publish
+---
+

fern/products/docs/docs.yml

@@ -215,6 +215,8 @@ navigation:
         path: ./pages/getting-started/publishing-your-docs.mdx
       - page: Setting up your domain
         path: ./pages/getting-started/setting-up-your-domain.mdx
+      - page: in PREVIEW AND PUBLISH
+        path: ../../docs/pages/learn/docs/preview-publish/in-preview-and-publish.mdx
   - section: Customization
     collapsed: true
     contents:
@@ -308,9 +310,9 @@ navigation:
     contents:
       - page: Overview
         path: ./pages/security/overview.mdx
-  -  section: Self-hosted
-     collapsed: true
-     contents:
+  - section: Self-hosted
+    collapsed: true
+    contents:
       - page: Overview
         path: ./pages/enterprise/self-hosted.mdx
       - page: Set up self-hosted documentation
@@ -359,7 +361,7 @@ navigation:
       - page: GitLab
         path: ./pages/developer-tools/gitlab.mdx
       - page: Vale
-        path: ./pages/developer-tools/vale.mdx  
+        path: ./pages/developer-tools/vale.mdx
       - page: View Markdown
         path: ./pages/developer-tools/view-markdown.mdx
   - section: Resources
@@ -411,15 +413,13 @@ navigation:
           hidden: true
       - slackAskFern:
           hidden: true
-      - section: "Fern Writer API"
+      - section: Fern Writer API
         referenced-packages:
           - slackScribe
         contents: []
       - sources:
           hidden: true
       - website:
           hidden: true
-    # must be included to use the schema component
   - api: API reference
     api-name: docs-yml
-