Merge pull request #32870 from storybookjs/yann/update-addon-kit-docs

Docs: Update addon migration guide link

Author: jonniebigodes

docs/addons/addon-migration-guide.mdx

@@ -57,7 +57,7 @@ Here are the changes in version 10.0 that impact addon development.
 
 ### ESM-only builds
 
-Storybook 10 requires all addons to be built as ESM-only. This change simplifies the build process and reduces maintenance overhead. You'll need to make many changes to `tsup.config.ts`, so it can be easier to copy the reference file in the [`addon-kit` repository](https://github.com/storybookjs/addon-kit/blob/esm-only/tsup.config.ts).
+Storybook 10 requires all addons to be built as ESM-only. This change simplifies the build process and reduces maintenance overhead. You'll need to make many changes to `tsup.config.ts`, so it can be easier to copy the reference file in the [`addon-kit` repository](https://github.com/storybookjs/addon-kit/blob/main/tsup.config.ts).
 
 This update brings the following changes:
 * The Node target moves from Node 20.0 to Node 20.19