Keep in mind, zlib1 (note the 1 at the end of the filename) is a mainstream effort from the authors to maintain a corrected compilation of the library, and its codebase in the wild. The documentation explains this very throughly, as well as the mistake that was overlooked prior to the mass release of zlib (without the 1) at the original release date. The naming convention is important. What you name the file after doesn’t mean much, as long as it is a corrected build (away from regular zlib.xx).
People need to know this, who are aware of the libs history.
So, I recommend you indicate this as to clarify it is the corrected code.