add more details to pipelined lock (#4958)
add more details to pipelined lock (#4958)

* add more details to pipelined lock

Signed-off-by: youjiali1995 <c0aa3f5eb42bd3bf1adeeced4b718fc1900fde64@gmail.com>

* address comment

Signed-off-by: youjiali1995 <c0aa3f5eb42bd3bf1adeeced4b718fc1900fde64@gmail.com>

* Update pessimistic-transaction.md

Co-authored-by: TomShawn <3d0966147538bc5ab020e8dffa2c0b746f9728a6@users.noreply.github.com>

* Update pessimistic-transaction.md

Co-authored-by: TomShawn <3d0966147538bc5ab020e8dffa2c0b746f9728a6@users.noreply.github.com>

* Update pessimistic-transaction.md

Co-authored-by: TomShawn <3d0966147538bc5ab020e8dffa2c0b746f9728a6@users.noreply.github.com>

Co-authored-by: TomShawn <3d0966147538bc5ab020e8dffa2c0b746f9728a6@users.noreply.github.com>
pingcap/docs-cn,pingcap/docs-cn