docs(add): contribution guideflow (#5949)

Author: nerda-codes

pages/demos/index.mdx

@@ -64,5 +64,6 @@ description: Explore our interactive step-by-step demos to learn how to use the
     - [How to log in as an IAM Member](/iam/how-to/log-in-as-a-member/)
     - [How to grant access to the Partner Space](/partner-space/how-to/grant-access-to-partner-space/)
     - [How to manage Members](/iam/how-to/manage-members/#interactive-demo)
+    - [How to suggest an edit to the Scaleway documentation](/guidelines/#suggest-an-edit)
   </LinksList>
 </Grid>