Fix if not exist in bdbagFetch.sh

workflow/scripts/bdbagFetch.sh

 #!/bin/bash
 
-if [ -z ${3} ]
+if [ -z "${3}" ]
 then
 bdbag --resolve-fetch all --fetch-filter filename\$*fastq.gz ${1}
     for i in $(find */ -name "*.R*.fastq.gz")
@@ -8,7 +8,7 @@ bdbag --resolve-fetch all --fetch-filter filename\$*fastq.gz ${1}
         path=${2}$(echo ${i##*/} | grep -o "\.R.\.fastq\.gz")
         mv ${i} ./${path}
     done
-elif [ ${3} == "TEST" ]
+elif [ "${3}" == "TEST" ]
 then
     bdbag --resolve-fetch all --fetch-filter filename\$*.txt ${1}
 fi
\ No newline at end of file