tidb: update docs for new transaction features in 5.0 (#4174)
tidb: update docs for new transaction features in 5.0 (#4174)

* commit-message:update tidb-configuration-file.md

Signed-off-by: Joyinqin <a7f1583e42c4f70e9a09edacfea9d3c996e6af84@users.noreply.github.com>

* refine the language

* Update tidb-configuration-file.md

* Update tidb-configuration-file.md

* Apply suggestions from code review

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

* Update tidb-configuration-file.md

* Apply suggestions from code review

* Apply suggestions from code review

Co-authored-by: Keke Yi <4b13e11d5beb5669a80650bc9e0535372af5b679@users.noreply.github.com>
Co-authored-by: TomShawn <3d0966147538bc5ab020e8dffa2c0b746f9728a6@users.noreply.github.com>
pingcap/docs,pingcap/docs,pingcap/docs