MIGRATION.md: Fix indentation
MIGRATION.md: Fix indentation

storybooks/react-storybook,storybooks/react-storybook,storybooks/storybook,kadirahq/react-storybook,kadirahq/react-storybook,storybooks/react-storybook,storybooks/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook