fix loop logic in bucket hook and fix bucket name sin values file

k8s/charts/seaweedfs/templates/post-install-bucket-hook.yaml

@@ -48,8 +48,8 @@ spec:
         command:
           - "/bin/sh"
           - "-ec"
-          {{- range $.Values.filer.s3.createBuckets }}
           - |
+          {{- range $.Values.filer.s3.createBuckets }}
             exec /bin/echo \
             "s3.bucket.create --name {{ . }}" |\
             /usr/bin/weed shell

k8s/charts/seaweedfs/values.yaml

@@ -578,12 +578,12 @@ filer:
     auditLogConfig: {}
     # You may specify buckets and users to be created during the install process
     # createBuckets: 
-    #   - bucketA
-    #   - bucketB
+    #   - bucket-a
+    #   - bucket-b
     # createUsers:
     #   - name: friend
     #     actions: "read,write,list"
-    #     buckets: "bucketA"
+    #     buckets: "bucket-b"
     #     secretName: friend-s3-creds