reference/performance: correct replica selection policy of follower read (#2289)
reference/performance: correct replica selection policy of follower read (#2289)

Signed-off-by: 5kbpers <82ce634e1749ff1c036c2970dd69219ac9501357@pingcap.com>

Co-authored-by: pingcap-github-bot <02289d1d97168591eb26d2551f7cc1b10910d341@pingcap.com>

pingcap/docs-cn,pingcap/docs-cn