Update release-1.21.1.md (SharePoint#10225)

Author: Adam-it

docs/spfx/release-1.21.1.md

@@ -9,7 +9,7 @@ ms.localizationpriority: high
 This is a _minor bump_ that fixes the issues around SharePoint Framework solution packaging, provides a fix on a regression related on the CSS handling with the previous [released 1.21 version](release-1.21.md).
 
 > [!TIP]
-> It's safe to keep on using SharePoint Framework 1.21 version (if you don't have CSS issues with it), but we do recommend using always the latest version in the production, which in this case would be the 1.17.1, which has fixes on the reported GitHub issues as listed below.
+> It's safe to keep on using SharePoint Framework 1.21 version (if you don't have CSS issues with it), but we do recommend using always the latest version in the production, which in this case would be the 1.21.1, which has fixes on the reported GitHub issues as listed below.
 
 **Released:** May 3, 2025
 
@@ -50,4 +50,4 @@ Here's a list of specific issues fixed around SharePoint Framework since the pre
 
 Also following issue has been fixed and the server side update is currently rolling in production. This means that the fix will be applied on server side without changes on the client side packages.
 
-- [#10053](https://github.com/SharePoint/sp-dev-docs/issues/10053) - Web Part Missing in Toolbox After Running Gulp Serve
+- [#10053](https://github.com/SharePoint/sp-dev-docs/issues/10053) - Web Part Missing in Toolbox After Running Gulp Serve