build: [merchantapi] update package name for datasources and promotio…

…ns nodejs_gapic_library targets (#5443)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 640983239

Source-Link: https://togithub.com/googleapis/googleapis/commit/b9b8f6333c413e1e22307d10dff012e89d6bf75a

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/0e064363f44e8d56c4e0f951dcb65177daad7e8c
Copy-Tag: eyJwIjoicGFja2FnZXMvZ29vZ2xlLXNob3BwaW5nLW1lcmNoYW50LXByb21vdGlvbnMvLk93bEJvdC55YW1sIiwiaCI6IjBlMDY0MzYzZjQ0ZThkNTZjNGUwZjk1MWRjYjY1MTc3ZGFhZDdlOGMifQ==

packages/google-shopping-merchant-promotions/samples/generated/v1beta/promotions_service.get_promotion.js

@@ -35,7 +35,7 @@ function main(name) {
   // const name = 'abc123'
 
   // Imports the Promotions library
-  const {PromotionsServiceClient} = require('@google-shopping/promotionsons').v1beta;
+  const {PromotionsServiceClient} = require('@google-shopping/promotions').v1beta;
 
   // Instantiates a client
   const promotionsClient = new PromotionsServiceClient();

packages/google-shopping-merchant-promotions/samples/generated/v1beta/promotions_service.insert_promotion.js

@@ -46,7 +46,7 @@ function main(parent, promotion, dataSource) {
   // const dataSource = 'abc123'
 
   // Imports the Promotions library
-  const {PromotionsServiceClient} = require('@google-shopping/promotionsons').v1beta;
+  const {PromotionsServiceClient} = require('@google-shopping/promotions').v1beta;
 
   // Instantiates a client
   const promotionsClient = new PromotionsServiceClient();