docs: improve docs contribution guidelines (#13605)

* docs: improve docs contribution guidelines

* fix build error

* fix build errors

* fix build

* fix build

www/apps/resources/.env.sample

@@ -1,11 +1,17 @@
+# ESSENTIAL FOR DEV
+NEXT_PUBLIC_ENV=development
+NEXT_PUBLIC_BASE_URL=http://localhost:3000
+NEXT_PUBLIC_BASE_PATH=/resources
+
+# OPTIONAL FOR DEV
+ANALYZE_BUNDLE=
+
+# REQUIRED FOR PROD
 NEXT_PUBLIC_SEGMENT_API_KEY=
 NEXT_PUBLIC_DOCS_ALGOLIA_INDEX_NAME=
 NEXT_PUBLIC_API_ALGOLIA_INDEX_NAME=
 NEXT_PUBLIC_ALGOLIA_API_KEY=
 NEXT_PUBLIC_ALGOLIA_APP_ID=
-NEXT_PUBLIC_ENV=
-NEXT_PUBLIC_BASE_URL=
-NEXT_PUBLIC_BASE_PATH=
 NEXT_PUBLIC_DOCS_URL=
 NEXT_PUBLIC_USER_GUIDE_URL=
 NEXT_PUBLIC_UI_URL=
@@ -13,7 +19,6 @@ NEXT_PUBLIC_API_URL=
 NEXT_PUBLIC_CLOUD_URL=
 NEXT_PUBLIC_DOCS_V1_URL=
 ALGOLIA_WRITE_API_KEY=
-ANALYZE_BUNDLE=
 NEXT_PUBLIC_AI_ASSISTANT_URL=
 NEXT_PUBLIC_AI_WEBSITE_ID=
 NEXT_PUBLIC_AI_API_ASSISTANT_RECAPTCHA_SITE_KEY=

www/apps/resources/app/nextjs-starter/guides/storefront-returns/page.mdx

@@ -1257,7 +1257,7 @@ You can learn more about creating return reasons in the [Manage Return Reasons](
 Next, you need to create a customer account from the Next.js Starter Storefront. To do that:
 
 1. Go to Account.
-2. Click the "Join us" link.
+2. Click the `Join us` link.
 3. Enter the customer's details like email and password.
 4. Click "Join" to create the account.