docs: updates following authentication flow changes (#8706)

* docs: updates following authentication flow changes

* generate sidebar

* added open api specs

* fix up OAS

* changes to existing pages

* change sidebar items

* update marketplace recipe

www/apps/resources/app/storefront-development/customers/register/page.mdx

@@ -9,7 +9,7 @@ export const metadata = {
 To register a customer, you implement the following steps:
 
 1. Show the customer a form to enter their details.
-2. Send a `POST` request to the `/auth/customer/emailpass` API route to obtain a JWT token.
+2. Send a `POST` request to the `/auth/customer/emailpass/register` API route to obtain a JWT token.
 3. Send a request to the [Create Customer API route](!api!/store#customers_postcustomers) pass the JWT token in the header.
 
 For example:
@@ -28,7 +28,7 @@ export const fetchHighlights = [
   const handleRegistration = async () => {
     // obtain JWT token
     const { token } = await fetch(
-      `http://localhost:9000/auth/customer/emailpass`,
+      `http://localhost:9000/auth/customer/emailpass/register`,
       {
         credentials: "include",
         method: "POST",