docs(shopping-css-v1): Minor wording updates (#26125)

google-shopping-css-v1/proto_docs/google/shopping/css/v1/css_product_common.rb

@@ -166,7 +166,7 @@ module V1
         #     Date on which the item should expire, as specified upon insertion, in
         #     [ISO
         #     8601](http://en.wikipedia.org/wiki/ISO_8601) format. The actual
-        #     expiration date in Google Shopping is exposed in `productstatuses` as
+        #     expiration date is exposed in `productstatuses` as
         #     [googleExpirationDate](https://support.google.com/merchants/answer/6324499)
         #     and might be earlier if `expirationDate` is too far in the future.
         #     Note: It may take 2+ days from the expiration date for the item to
@@ -285,7 +285,7 @@ class ProductWeight
         #     8601](http://en.wikipedia.org/wiki/ISO_8601) format.
         # @!attribute [rw] google_expiration_date
         #   @return [::Google::Protobuf::Timestamp]
-        #     Date on which the item expires in Google Shopping, in [ISO
+        #     Date on which the item expires, in [ISO
         #     8601](http://en.wikipedia.org/wiki/ISO_8601) format.
         class CssProductStatus
           include ::Google::Protobuf::MessageExts