Fixed indentation in trigger.py
Fixed indentation in trigger.py

shikhar413/openmc,johnnyliu27/openmc,lilulu/openmc,smharper/openmc,walshjon/openmc,mit-crpg/openmc,samuelshaner/openmc,shikhar413/openmc,samuelshaner/openmc,samuelshaner/openmc,shikhar413/openmc,kellyrowland/openmc,mjlong/openmc,smharper/openmc,paulromano/openmc,liangjg/openmc,smharper/openmc,johnnyliu27/openmc,amandalund/openmc,liangjg/openmc,mit-crpg/openmc,mit-crpg/openmc,samuelshaner/openmc,shikhar413/openmc,amandalund/openmc,paulromano/openmc,wbinventor/openmc,mjlong/openmc,amandalund/openmc,johnnyliu27/openmc,walshjon/openmc,lilulu/openmc,walshjon/openmc,wbinventor/openmc,amandalund/openmc,walshjon/openmc,kellyrowland/openmc,bhermanmit/openmc,johnnyliu27/openmc,lilulu/openmc,wbinventor/openmc,paulromano/openmc,liangjg/openmc,wbinventor/openmc,mit-crpg/openmc,paulromano/openmc,smharper/openmc,bhermanmit/openmc,liangjg/openmc