docs: replace ModuleRegistrationName with Modules (#9142)

www/apps/resources/app/commerce-modules/currency/examples/page.mdx

@@ -16,14 +16,14 @@ In this guide, you’ll find common examples of how you can use the Currency Mod
   ```ts
   import { MedusaRequest, MedusaResponse } from "@medusajs/medusa"
   import { ICurrencyModuleService } from "@medusajs/types"
-  import { ModuleRegistrationName } from "@medusajs/utils"
+  import { Modules } from "@medusajs/utils"
 
 export async function GET(
   req: MedusaRequest,
   res: MedusaResponse
 ): Promise<void> {
   const currencyModuleService: ICurrencyModuleService = req.scope.resolve(
-    ModuleRegistrationName.CURRENCY
+    Modules.CURRENCY
   )
 
   res.json({
@@ -62,14 +62,14 @@ export async function GET(request: Request) {
   ```ts
   import { MedusaRequest, MedusaResponse } from "@medusajs/medusa"
   import { ICurrencyModuleService } from "@medusajs/types"
-  import { ModuleRegistrationName } from "@medusajs/utils"
+  import { Modules } from "@medusajs/utils"
 
 export async function GET(
   req: MedusaRequest,
   res: MedusaResponse
 ): Promise<void> {
   const currencyModuleService: ICurrencyModuleService = req.scope.resolve(
-    ModuleRegistrationName.CURRENCY
+    Modules.CURRENCY
   )
 
   const currency = await currencyModuleService.retrieveCurrency("usd")