add tmpDir to parameter_meta section

bcftools.wdl

@@ -161,6 +161,7 @@ task Sort {
     parameter_meta {
         inputFile: {description: "A vcf or bcf file.", category: "required"}
         outputPath: {description: "The location the output VCF file should be written.", category: "common"}
+        tmpDir: {description: "The location of the temporary files during the bcftools sorting.", category: "advanced"}
         memory: {description: "The amount of memory this job will use.", category: "advanced"}
         timeMinutes: {description: "The maximum amount of time the job will run in minutes.", category: "advanced"}
         dockerImage: {description: "The docker image used for this task. Changing this may result in errors which the developers may choose not to address.", category: "advanced"}