Apply suggestion from @rcomer

Co-authored-by: Ruth Comer <10599679+rcomer@users.noreply.github.com>

Author: timhoffm

doc/devel/contribute.rst

@@ -203,7 +203,7 @@ result is not of value to the project. To preserve precious core developer
 capacity, we reserve the right to rigorously reject seemingly AI generated
 low-value contributions.
 
-In particular, it is also strictly forbidden to post non-human generated
+In particular, it is also strictly forbidden to post AI generated
 content to issues or PRs via automated tooling such as bots or agents. We
 may ban such users and/or report them to GitHub.