Merge branch 'bc/sha-256-doc-updates'

Further update of docs to adjust to the recent SHA-256 work. * bc/sha-256-doc-updates: docs: fix step in transition plan docs: document SHA-256 pack and indices

Junio C Hamano committed Aug 19, 2020 at 16:14 UTC 336fbd18bb371f26cbe25682b38d088088cb7fd8

No changes.