Issue on docs

[Reallyone]

Path:/zh-CN/docs/install/deploy-manually/integrated-storage-compute-deploy-manually

执行：CREATE TABLE testdb.table_hash
(
k1 TINYINT,
k2 DECIMAL(10, 2) DEFAULT "10.5",
k3 VARCHAR(10) COMMENT "string column",
k4 INT NOT NULL DEFAULT "1" COMMENT "int column"
)
COMMENT "my first table"
DISTRIBUTED BY HASH(k1) BUCKETS 32;

提示：ERROR 1105 (HY000): errCode = 2, detailMessage = replication num should be less than the number of available backends. replication num is 3, available backend num is 2