Update opnReqTest

Author: FernandoAndrade-NOAA

tests/opnReqTest

@@ -649,7 +649,7 @@ fi
 mkdir -p ${STMP}/${USER}
 NEW_BASELINE=${STMP}/${USER}/FV3_OPNREQ_TEST/OPNREQ_TEST
 RTPWD=${NEW_BASELINE}
-INPUTDATA_ROOT=${INPUTDATA_ROOT:-$DISKNM/NEMSfv3gfs/input-data-20251015}
+INPUTDATA_ROOT=${INPUTDATA_ROOT:-${DISKNM}/NEMSfv3gfs/input-data-20251015}
 INPUTDATA_ROOT_WW3=${INPUTDATA_ROOT}/WW3_input_data_20250807
 INPUTDATA_LM4=${INPUTDATA_LM4:-${INPUTDATA_ROOT}/LM4_input_data}
 INPUTDATA_GFSv17opn=${INPUTDATA_GFSv17opn:-${DISKNM}/NEMSfv3gfs/GFSv17opn_20251014}