fixing incorrect storybook build command

Author: georgewrmarshall

.github/workflows/build-deploy-storybook.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Install npm dependencies
         run: yarn --immutable
       - name: Run build script
-        run: yarn build:storybook
+        run: yarn build-storybook
       - name: Deploy to `storybook-static` directory of `gh-pages` branch
         uses: peaceiris/actions-gh-pages@de7ea6f8efb354206b205ef54722213d99067935
         with: