Adding possessive apostrophe

content/release_notes/2_3_0.md

@@ -229,7 +229,7 @@ favorites this user has placed before which is useful for recommendations.
 *   The api key that was previously placed in the dom for ajax requests has been
     removed since the api now uses the session to authenticate the user.
 
-*   Mostly inspired by Jeff Squires extension spree_reuse_credit card, checkout
+*   Mostly inspired by Jeff Squires' extension spree_reuse_credit card, checkout
     now can remember user credit card info. Make sure your user model responds
     to a `payment_sources` method and customers will be able to reuse their
     credit card info.