Fix typo in react-19.md

Fixed typo

Author: desjardinsalec

src/content/blog/2024/12/05/react-19.md

@@ -17,7 +17,7 @@ Additions since this post was originally shared with the React 19 RC in April:
 - **Pre-warming for suspended trees**: see [Improvements to Suspense](/blog/2024/04/25/react-19-upgrade-guide#improvements-to-suspense).
 - **React DOM static APIs**: see [New React DOM Static APIs](#new-react-dom-static-apis).
 
-_The date for this post has been update to reflect the stable release date._
+_The date for this post has been updated to reflect the stable release date._
 
 </Note>
 
@@ -807,4 +807,4 @@ Thanks to [Joey Arhar](https://github.com/josepharhar) for driving the design an
 #### How to upgrade {/*how-to-upgrade*/}
 See the [React 19 Upgrade Guide](/blog/2024/04/25/react-19-upgrade-guide) for step-by-step instructions and a full list of breaking and notable changes.
 
-_Note: this post was originally published 04/25/2024 and has been updated to 12/05/2024 with the stable release._
+_Note: this post was originally published 04/25/2024 and has been updated to 12/05/2024 with the stable release._