ci: fix chromatic script

Author: DaniAkash

.github/workflows/build.yml

@@ -68,16 +68,14 @@ jobs:
     needs: [test]
     name: Publish storybook to chromatic 🧪
     runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: example
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
           node-version: 12.x
-      - run: cd .. && npx yarn bootstrap && cd example
+      - run: npx yarn bootstrap
       - uses: chromaui/action@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           projectToken: ${{ secrets.CHROMATIC_PROJECT_TOKEN }}
+        working-directory: example