python file location

tasks/two_family_merge.wdl

@@ -9,7 +9,7 @@ task two_family_merge {
 	command <<<
 		cat ${LCL5_trio_vcf} | grep -v '##' > ${family_name}.LCL5.txt
 		cat ${LCL6_trio_vcf} | grep -v '##' > ${family_name}.LCL6.txt
-		python opt/merge_two_family.py -LCL5 ${family_name}.LCL5.txt -LCL6 ${family_name}.LCL6.txt -family ${family_name}
+		python /opt/merge_two_family.py -LCL5 ${family_name}.LCL5.txt -LCL6 ${family_name}.LCL6.txt -family ${family_name}
 	>>>
 
 	runtime {