docs: add frontmatter metadata example

README.md

@@ -29,7 +29,7 @@ The website code is organized with a top-level `docs` folder that contains all t
 
 Documentation pages are located in the `/docs` folder in the root directory of the project. The docs pages are all markdown files. When you want to add a new page, add the new file in the appropriate folder in the `/docs` page. `index.md` files will be the default page for a directory, and `{pagename}.md` will define subpages for a directory.
 
-After adding a page, you will also need to list it in `/src/data/documentation-links.yaml`.  This file defines the documentation structure which you will see on the left sidebar in the documentation pages.
+After adding a page, you will also need to list it in `/src/data/documentation-links.yaml`. **This file defines the documentation structure which you will see on the left sidebar in the documentation pages**. Take into account that if you update the `/docs` structure or remove a doc, you should also update this file to avoid navigation issues.
 
 #### Adding notes to a doc
 
@@ -41,8 +41,7 @@ Notes in documentation pages are highlighted boxes (color depend on the current
 
 <img width="809" alt="Screen Shot 2023-01-04 at 18 22 06" src="https://user-images.githubusercontent.com/948922/210652463-1fc0370e-815c-427d-9eff-64199a300460.png">
 
-> Example Note from [Account Management with Clef
+> Example Note from [Account Management with Clef](https://geth.ethereum.org/docs/fundamentals/account-management) doc.
-](https://geth.ethereum.org/docs/fundamentals/account-management) doc
 
 #### Images
 
@@ -52,6 +51,19 @@ Images should be saved to `public/images/docs` and included in the markdown as f
 ![alt-text](/images/docs/image-title.png)
 ```
 
+#### Metadata
+
+`title` and `description` are **required** metadata props for a post: `title` will generate the main heading on the doc page and `description` is used for SEO purposes, to serve as a concise and appropiate description of the content.
+
+```
+---
+title: Go API
+description: Introduction to the Go packages that allow Geth to be used in Go native applications.
+---
+```
+
+> Example of the metadata for a sample post.
+
 ### Building locally
 
 To check a new page it is helpful to build the site locally and see how it behaves in the browser. First, run the development server: