It really depends how you mean "reform", as you can't just pronounce this word in this context without some further elaboration. As Christians, we don't believe that we've "reformed" our scriptures, since our scriptures are God-breathed, inspired by the Holy Spirit to then be written by the various prophets, apostles, and good men that God ordained to write these texts, and they had continued since then to have been copied down by thousands of scribes since their original inception, then being compared between those different translations and copies of all of those scribes, and having now had their scribal errors whittled down to absolute infallibility through the dedication of the faithful to keeping these texts clean of human error, which I'm guessing you'd define as "reform"; the error of humanity in failing to preserve the scriptures of The Lord. I'm not sure what religion you could use as an example to have "reformed" their scriptures, then, unless you're referring to a folk like Mormons, perhaps.