Fix the label of the trigger source on TekGui
Fix the label of the trigger source on TekGui

--CAR

rmcgurrin/Qlab,rmcgurrin/Qlab,BBN-Q/Qlab,Plourde-Research-Lab/Qlab,Plourde-Research-Lab/Qlab,BBN-Q/Qlab,Plourde-Research-Lab/Qlab,rmcgurrin/Qlab,BBN-Q/Qlab,rmcgurrin/Qlab,BBN-Q/Qlab