fixed tabs/spacing issue in test file
fixed tabs/spacing issue in test file

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