remove stray empty line

Author: hbuchel

src/pages/[platform]/build-a-backend/storage/copy-files/index.mdx

@@ -66,7 +66,6 @@ Cross identity ID copying is only allowed if the destination path has the the ri
 
 </Callout>
 
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 ## Specify a bucket or copy across buckets / regions
 
 You can also perform an `copy` operation to a specific bucket by providing the `bucket` option. This option can either be a string representing the target bucket's assigned name in Amplify Backend or an object specifying the bucket name and region from the console.