storage/objects: update prefix and delimiter comments on listByPrefix
The prefix instructions for queries are incorrect in the Google Cloud Storage sample according to my testing. The `/` belongs at the end of the prefix to look up files in a directory, not at the beginning.
@@ -129,11 +129,11 @@ func listByPrefix(client *storage.Client, bucket, prefix, delim string) error {
// /a/1.txt
// /a/b/2.txt
//
- // If you just specify prefix="/a", you'll get back:
+ // If you just specify prefix="a/", you'll get back:
// /a/1.txt
// /a/b/2.txt
//
- // However, if you specify prefix="/a"" and delim="/", you'll get back:
+ // However, if you specify prefix="a/" and delim="/", you'll get back:
// /a/1.txt
it := client.Bucket(bucket).Objects(ctx, &storage.Query{
Prefix: prefix,
