Adds a note about unique sample names in DeepVariant Cohort Best Practices example. See https://github.com/dnanexus-rnd/GLnexus/issues/207#issuecomment-743704423 for context.
Adds a note about unique sample names in DeepVariant Cohort Best Practices example. See https://github.com/dnanexus-rnd/GLnexus/issues/207#issuecomment-743704423 for context.

PiperOrigin-RevId: 348679756

google/deepvariant,google/deepvariant,google/deepvariant