Fix sTGC digitization typo for pileup
Small typo that returns an error but doesn't crash NSW-sTGC pileup in 21.3 is fixed. It was causing a double initialization of sTGCDigitization tool.
Small typo that returns an error but doesn't crash NSW-sTGC pileup in 21.3 is fixed. It was causing a double initialization of sTGCDigitization tool.