fixed typo in for particle restart option
fixed typo in for particle restart option

shikhar413/openmc,smharper/openmc,keadyk/openmc_mg_prepush,shikhar413/openmc,shenqicang/openmc,kellyrowland/openmc,wbinventor/openmc,nhorelik/openmc,liangjg/openmc,shikhar413/openmc,walshjon/openmc,mit-crpg/openmc,lilulu/openmc,johnnyliu27/openmc,paulromano/openmc,sxds/opemmc,walshjon/openmc,paulromano/openmc,mjlong/openmc,bhermanmit/openmc,keadyk/openmc_mg_prepush,smharper/openmc,wbinventor/openmc,amandalund/openmc,johnnyliu27/openmc,shenqicang/openmc,bhermanmit/cdash,lilulu/openmc,smharper/openmc,paulromano/openmc,smharper/openmc,wbinventor/openmc,liangjg/openmc,mit-crpg/openmc,bhermanmit/openmc,samuelshaner/openmc,liangjg/openmc,walshjon/openmc,paulromano/openmc,lilulu/openmc,johnnyliu27/openmc,samuelshaner/openmc,samuelshaner/openmc,mjlong/openmc,nhorelik/openmc,johnnyliu27/openmc,wbinventor/openmc,keadyk/openmc_mg_prepush,kellyrowland/openmc,liangjg/openmc,amandalund/openmc,shikhar413/openmc,amandalund/openmc,samuelshaner/openmc,mit-crpg/openmc,walshjon/openmc,sxds/opemmc,mit-crpg/openmc,amandalund/openmc