[BUG] `mc batch` incorrect command examples

[ramondeklein]

The mc batch generate and mc batch start commands show the following syntax:

mc [GLOBALFLAGS] batch generate \
                       TARGET   \
                       JOBTYPE

where TARGET is described as "The alias used to generate the YAML template file. The specified alias does not restrict the deployment(s) where you can use the generated file.". Although the syntax specifies the TARGET, all examples use mc batch generate myminio/mybucket replicate.

Although it works with specifying a bucket, the bucket-name is ignored and it would be better to leave them out, so:

mc batch start myminio/mybucket jobfile.yaml

should be:

mc batch start myminio jobfile.yaml

and

mc batch replicate myminio/mybucket replicate

should be:

mc batch replicate myminio replicate

[djwfyi]

This is a good catch. Fixing.