docs: phone authentication + otp guide (#12544)

* initial

* docs: phone authentication guide

* small fix

* Twilio SMS -> Twilio

* vale fix

* fix

* fix to auth sidebar

* fixes

* generate

www/apps/resources/sidebars/auth.mjs

@@ -47,7 +47,7 @@ export const authSidebar = [
       {
         type: "category",
         title: "Server Guides",
-        autogenerate_tags: "server+auth",
+        autogenerate_tags: "auth+server",
         autogenerate_as_ref: true,
         sort_sidebar: "alphabetize",
         description:

www/apps/resources/sidebars/how-to-tutorials.mjs

@@ -113,6 +113,13 @@ While tutorials show you a specific use case, they also help you understand how
         path: "/integrations/guides/magento",
         description: "Learn how to migrate data from Magento to Medusa.",
       },
+      {
+        type: "link",
+        title: "Phone Authentication",
+        path: "/how-to-tutorials/tutorials/phone-auth",
+        description:
+          "Learn how to allow users to authenticate using their phone numbers.",
+      },
       {
         type: "link",
         title: "Product Reviews",

www/apps/resources/sidebars/integrations.mjs

@@ -105,6 +105,11 @@ export const integrationsSidebar = [
         path: "/infrastructure-modules/notification/sendgrid",
         title: "SendGrid",
       },
+      {
+        type: "ref",
+        path: "/how-to-tutorials/tutorials/phone-auth#step-3-integrate-twilio-sms",
+        title: "Twilio SMS",
+      },
     ],
   },
   {