I've noticed the following inaccuracies:
Section 4. The name "Crag Hack" for "Buqi" is translated as "Crag Hack".
Section 10.3.1. The word "зависит" (depends) is missing the first letter.
In the section about the probabilities of a specific damage value, it should be mentioned that all "random" numbers in Heroes of Might and Magic are not entirely random, but rather pseudo-random, so all probabilities in the game should be taken as approximate. (Any PRNG has a period. If it is short, the pseudo-random numbers will repeat).
And the links are indeed broken (they point to this forum, not to the reference website).
P. S. Special thanks to Phoenixhmm for translating Lord Morglin Ironfist's letters! I will read them with pleasure and remember how it was :)