fix yml sintax

Author: mikesposito

.github/workflows/publish-preview.yml

@@ -40,7 +40,7 @@ jobs:
         with:
           is-high-risk-environment: true
       - name: Build
-      - run: |
+        run: |
           export NODE_OPTIONS="--max_old_space_size=4096"
           yarn build
       - name: Get commit SHA