Do not wrap in square brackets already wrapped IPv6 addresses v2

There was already a fix https://github.com/redisson/redisson/commit/b7df3a2d293b7cce438d1bb795289cbb4da30f37

But it was lost in https://github.com/redisson/redisson/commit/a9f7a99388c3dabdc45157af61558975e0e61fdb#diff-7d2da5068938564117bd318316bdd1ad