update config

Author: YanyanLiuBio

nextflow.config

@@ -82,8 +82,8 @@ process {
             mode: 'copy'
         ]
         container = 'seqwell/python:v2.0'
-        cpus = 4
-        memory = '8 GB'
+        cpus = 2
+        memory = '4 GB'
         time = '30m'
     }
 }