[DATALAD] modified subdataset properties

.gitmodules

@@ -2,3 +2,4 @@
 	path = ds003/ds003_fmriprep
 	url = http://datasets.datalad.org/labs/poldrack/ds003_fmriprep/.git
 	datalad-id = c6453104-2333-11e9-b719-44a84243ca05
+	datalad-url = ///labs/poldrack/ds003_fmriprep