refactor: normalize url fn & cleanup

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

launcher/InstanceImportTask.cpp

@@ -90,7 +90,7 @@ void InstanceImportTask::executeTask()
         setStatus(tr("Downloading modpack:\n%1").arg(m_sourceUrl.toString()));
         m_downloadRequired = true;
 
-            downloadFromUrl();
+        downloadFromUrl();
     }
 }