更新 'defaults'

defaults

@@ -1,6 +1,6 @@
 {   
     "reference_gtf_file": "oss://pgx-reference-data/reference/rmats/Homo_sapiens.GRCh38.103.gtf",
     "rmats_docker": "registry.cn-shanghai.aliyuncs.com/pgx-docker-registry/rmats:4.1.1",
-    "rmats_cluster": "OnDemand bcs.a2.large img-ubuntu-vpc"，
+    "rmats_cluster": "OnDemand bcs.a2.large img-ubuntu-vpc",
     "disk_size": "200"
     }