in2p3 test: fix beforeScript config

src/nf_modules/kallisto/indexing.config

@@ -54,7 +54,7 @@ profiles {
     singularity.autoMounts = true
     process{
       withName: index_fasta {
-        beforeScript = "export SINGULARITY_BIND="/sps,/scratch:/var/singularity/mnt/""
+        beforeScript = "export SINGULARITY_BIND=\"/sps,/scratch:/var/singularity/mnt/\""
         container = "/sps/lbmc/common/singularity/kallisto:0.44.0.img"
         scratch = true
         stageInMode = "copy"