chore(docs): update sharding docs (database-mesh#341)

Signed-off-by: wbtlb <wangbo@sphere-ex.com>

Signed-off-by: wbtlb <wangbo@sphere-ex.com>
Co-authored-by: wbtlb <wangbo@sphere-ex.com>

fix(docs): fix kubernetes config (database-mesh#225)

Signed-off-by: wangbo <wangbo@sphere-ex.com>

Co-authored-by: wangbo <wangbo@sphere-ex.com>

chore(ci): add unit test for golang and rust

Signed-off-by: mlycore <maxwell92@126.com>