Update docs/sphinx/source/whatsnew/v0.15.1.rst

Co-authored-by: Echedey Luis <80125792+echedey-ls@users.noreply.github.com>

Author: RDaxini

docs/sphinx/source/whatsnew/v0.15.1.rst

@@ -33,7 +33,7 @@ Documentation
     - :term:`aod500`
 
 * Provide an overview of IAM modeling functionality in :ref:`iam`. (:pull:`2683`)
-* Add AI checkbox to PR template, and auto-generate a comment on issues and PRs
+* Add AI checkbox to PR template, and auto-generate a comment on PRs
   from first-time contributors regarding AI and contributing guidelines.
   (:issue:`2617`, :pull:`2624`)