revlog: use appropriate format char for int ("i" instead of "I")
From https://docs.python.org/3.8/c-api/arg.html#numbers :
i (int) [int]
Convert a Python integer to a plain C int.
I (int) [unsigned int]
Convert a Python integer to a C unsigned int, without overflow checking.
edition = "2018"
max_width = 79
wrap_comments = true
error_on_line_overflow = true