Update spades.wdl

Co-authored-by: Davy Cats <davycats.dc@gmail.com>

spades.wdl

@@ -34,16 +34,16 @@ task Spades {
         File? tslrContigs
         File? trustedContigs
         File? untrustedContigs
-        Boolean singleCell = False
-        Boolean metagenomic = False
-        Boolean rna = False
-        Boolean plasmid = False
-        Boolean ionTorrent = False
-        Boolean onlyErrorCorrection = False
-        Boolean onlyAssembler = False
-        Boolean careful = False
-        Boolean disableGzipOutput = False
-        Boolean disableRepeatResolution = False
+        Boolean singleCell = false
+        Boolean metagenomic = false
+        Boolean rna = false
+        Boolean plasmid = false
+        Boolean ionTorrent = false
+        Boolean onlyErrorCorrection = false
+        Boolean onlyAssembler = false
+        Boolean careful = false
+        Boolean disableGzipOutput = false
+        Boolean disableRepeatResolution = false
         File? dataset
         File? tmpDir
         String? k