Fix primary files not showing when requesting multiple versions

src/database/models/version_item.rs

@@ -666,7 +666,7 @@ impl Version {
                                 url: file[3].to_string(),
                                 filename: file[1].to_string(),
                                 hashes: file_hashes,
-                                primary: file[3].parse().unwrap_or(false)
+                                primary: file[2].parse().unwrap_or(false)
                             })
                         }
                     });