Update description for regression test
Update description for regression test

shikhar413/openmc,walshjon/openmc,smharper/openmc,amandalund/openmc,liangjg/openmc,amandalund/openmc,smharper/openmc,walshjon/openmc,amandalund/openmc,liangjg/openmc,liangjg/openmc,shikhar413/openmc,amandalund/openmc,shikhar413/openmc,paulromano/openmc,walshjon/openmc,shikhar413/openmc,mit-crpg/openmc,mit-crpg/openmc,mit-crpg/openmc,mit-crpg/openmc,paulromano/openmc,smharper/openmc,liangjg/openmc,paulromano/openmc,smharper/openmc,walshjon/openmc,paulromano/openmc