fix default value not passed for cmPmb

src/sscocaller.nim

@@ -173,7 +173,7 @@ Arguments:
 
 Options:
   -t --threads <threads>  number of BAM decompression threads [default: 4]
-  -cb --cellbarcode <cellbarcode>  the cell barcode tag, by default it is CB
+  -cb --cellbarcode <cellbarcode>  the cell barcode tag, by default it is CB [default: CB]
   -MQ --minMAPQ <mapq>  Minimum MAPQ for read filtering [default: 20]
   -BQ --baseq <baseq>  base quality threshold for a base to be used for counting [default: 13]
   -CHR --chrom <chrom>  the selected chromsome (whole genome if not supplied,separate by comma if multiple chroms)
@@ -184,7 +184,7 @@ Options:
   -chrName --chrName  the chr names with chr prefix or not, if not supplied then no prefix
   -thetaREF --thetaREF <thetaREF>  the theta for the binomial distribution conditioning on hidden state being REF [default: 0.1]
   -thetaALT --thetaALT <thetaALT>  the theta for the binomial distribution conditioning on hidden state being ALT [default: 0.9]
-  -cmPmb --cmPmb <cmPmb>  the average centiMorgan distances per megabases default 0.1 cm per Mb [default 0.1]
+  -cmPmb --cmPmb <cmPmb>   the average centiMorgan distances per megabases default 0.1 cm per Mb [default: 0.1]
   -h --help  show help
 
   Examples
@@ -211,7 +211,7 @@ Options:
     cmPmb:float
     barcodeTag="CB"
   threads = parse_int($args["--threads"])
-  barcodeTag = $args["--barcodeTag"]
+  barcodeTag = $args["--cellbarcode"]
   mindp = parse_int($args["--minDP"])
   maxdp = parse_int($args["--maxDP"])
   maxtotal = parse_int($args["--maxTotalDP"])