openmpi-nightly-tarball.sh: fix typo in ompi-release URLs

Fix copy-n-paste error: had the ompi URLs instead of the ompi-release
URLs.

contrib/build-server/openmpi-nightly-tarball.sh

@@ -12,8 +12,8 @@ results_addr=testing@open-mpi.org
 # svn repository uri
 master_code_uri=https://github.com/open-mpi/ompi.git
 master_raw_uri=https://raw.github.com/open-mpi/ompi
-release_code_uri=https://github.com/open-mpi/ompi.git
-release_raw_uri=https://raw.github.com/open-mpi/ompi
+release_code_uri=https://github.com/open-mpi/ompi-release.git
+release_raw_uri=https://raw.github.com/open-mpi/ompi-release
 
 # where to put built tarballs
 outputroot=/l/osl/www/www.open-mpi.org/nightly