Docs modifications (#5804)

- Fixes #5504
- Fixes #5503
- Return 404 when the page does not exist
- Modified the footer in order to align it properly
- Removed "noticed something to change" in each table of content
- Fixed the URLs of the edit module 
- Added the edit module to Developers
- Fixed header style on the REST API page.
- Edited the README to point to Developers
- Fixed selected state when clicking on sidebar elements

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

packages/twenty-website/src/content/developers/self-hosting/cloud-providers.mdx

@@ -50,7 +50,7 @@ This uses the prebuilt images found on [docker hub](https://hub.docker.com/r/twe
 #### Environment Variables
 
 - Is set in respective tf-files
-- See docs [Setup Environment Variables](https://docs.twenty.com/start/self-hosting/) for usage
+- See docs [Setup Environment Variables](https://twenty.com/developers/section/self-hosting/self-hosting-var) for usage
 - After deployment you could can set `IS_SIGN_UP_DISABLED=true` (and run `terraform plan/apply` again) to disable new workspaces from being created
 
 #### Security and networking
@@ -325,7 +325,8 @@ resource "azurerm_container_app" "twenty_server" {
       }
       env {
         name  = "PG_DATABASE_URL"
-        value = "postgres://${local.db_user}:${local.db_password}@${local.db_app_name}:5432/default"
+        value = "postgres://${local.db_user}:
+        ${local.db_password}@${local.db_app_name}:5432/default"
       }
       env {
         name  = "FRONT_BASE_URL"
@@ -434,3 +435,5 @@ resource "azurerm_container_app" "twenty_db" {
 ## Others
 
 Please feel free to Open a PR to add more Cloud Provider options.
+
+<ArticleEditContent></ArticleEditContent>