Uh, no, that's not true. The Catholic Church teaches you can only be baptised once. In fact, if they suspect you may have been validly baptised before, they will only conditionally baptise you, if you convert.
I said "renewal of Baptism" not "doover of baptism."
When you "renovate" (="renew") something, you don't build a new one, you perfect the present one. Hence, all Catholics renew their baptism formally during the Easter season, when the minor exorcism is performed in unison. ("Do you reject Satan, and all his empty promises?", etc.) And yes, the phrase used is "renewal of baptism." It is done informally frequently throughout the year, including when one, apon having received the Eucharist, blesses himself with holy water in the name of the Father, and of the Son, and of the Holy Spirit.