Merge pull request #2750 from jdevega/patch-2

Update migration-to-storybook-7.md

Author: bashmish

docs/docs/storybook-builder/migration-to-storybook-7.md

@@ -38,7 +38,7 @@ In the new setup you'll need to install and configure them explicitly.
 We recommend to install the following addons:
 
 ```bash
-npm install @storybook/addon-essentials @storybook/addon-links --save-dev
+npm install @storybook/addon-essentials@7 @storybook/addon-links@7 --save-dev
 ```
 
 Then register them in the Storybook main configuration file: