Apply suggestion from @AA-Turner

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

Author: zklaus

peps/pep-0780.rst

@@ -62,7 +62,7 @@ marker for free-threading`_ Discourse thread:
   significant period of time, it looked likely that support would first be
   added in a fork. There are a lot of projects that depend on ``cffi``, which
   are likely fine to start depending on a fork for free-threading only, however
-  depending on a fork for >=3.13 or for all Python versions seems like a much
+  depending on a fork for >=3.13 or for all Python versions seemed like a much
   larger ask, and more disruptive for distribution packagers. While the
   situation has been resolved with CFFI 2.0.0, other projects may face similar
   issues.