docs: add Sanity integration guide (#10152)

* docs: add integrate to Sanity guide

* address PR feedback

* added more screenshots

* edit introduction

* added meta images + changes

www/apps/resources/app/commerce-modules/customer/extend/page.mdx

@@ -526,7 +526,7 @@ export const updateCustomFromCustomerWorkflow = createWorkflow(
       fields: ["custom.*"],
       filters: {
         id: input.customer.id,
-      }
+      },
     })
 
     // TODO create, update, or delete Custom record