docs: general fixes across docs (#4737)

* docs: general fixes across docs

* added deploy button to railway

* fix eslint errors

* fixes

docs/content/modules/products/admin/import-products.mdx

@@ -29,16 +29,16 @@ Part of the process of importing products is uploading a CSV file. This requires
 - [MinIO](../../../plugins/file-service/minio.md) (At least version `1.1.0`)
 - [Spaces](../../../plugins/file-service/spaces.md)
 
-### CSV File
-
-You must have a CSV file that you will use to import products into your Medusa backend. You can check [this CSV example file](https://medusa-doc-files.s3.amazonaws.com/product-import-1.3.8.csv) to see which format is required for your import.
-
 :::note
 
-If you have Sales Channels enabled on your backend, you must use [this CSV example file](https://medusa-doc-files.s3.amazonaws.com/product-import-sales-channels.csv) instead.
+The local file service can't be used for product import.
 
 :::
 
+### CSV File
+
+You must have a CSV file that you will use to import products into your Medusa backend. You can check [this CSV example file](https://medusa-doc-files.s3.amazonaws.com/product-import-sales-channels.csv) to see which format is required for your import.
+
 ### JS Client
 
 This guide includes code snippets to send requests to your Medusa backend using Medusa’s JS Client, among other methods.
@@ -122,7 +122,6 @@ fetch(`<BACKEND_URL>/admin/uploads`, {
 ```bash
 curl -L -X POST '<BACKEND_URL>/admin/uploads' \
   -H 'Authorization: Bearer <API_TOKEN>' \
-  -H 'Content-Type: text/csv' \
   -F 'files=@"<FILE_PATH_1>"'
 ```
 
@@ -131,6 +130,8 @@ curl -L -X POST '<BACKEND_URL>/admin/uploads' \
 
 This request returns an array of uploads. Each item in the array is an object that includes the properties `url` and `key`. You’ll need the `key` to import the products next.
 
+Where `<FILE_PATH_1>` is a full path to the file. For example, `/Users/medusa/product-import-sales-channels.csv`
+
 ---
 
 ## 2. Create a Batch Job for Product Import