modify delly.wdl: replaced string "5G" to integer 5 in memory runtime

delly.wdl

@@ -7,6 +7,7 @@ task CallSV {
         IndexedBamFile bamFile
         Reference reference
         String outputPath        
+        Int mem = 5
     }
     
 
@@ -25,7 +26,7 @@ task CallSV {
     
     runtime {
         docker: "quay.io/biocontainers/delly:0.8.1--h4037b6b_1"
-        memory: "5G"
+        memory: mem
     }
 
 }