docs: update wording as per review suggestion docs/_newsfragments/2213.newandimproved.rst

Co-authored-by: Federico Caselli <cfederico87@gmail.com>

Author: vytas7

docs/_newsfragments/2213.newandimproved.rst

@@ -3,4 +3,4 @@ A new keyword argument, `partitioned`, was added to
 with a separate cookie jar per each top-level site.
 (See also
 `CHIPS <https://developer.mozilla.org/en-US/docs/Web/Privacy/Privacy_sandbox/Partitioned_cookies>`__
-for a more detailed description of this experimental web technology.)
+for a more detailed description of this web technology.)