20221115-080554-34470671

website: internals/zstdelta

Summary:
Describe the zstdelta algorithm. It might be interesting to other source
control folks.

Reviewed By: muirdm

Differential Revision: D41275018

fbshipit-source-id: 8e44c3e23716c9130eaaedf751575d37f81e7696

20221115-004809-5076656c

Re-sync with internal repository