Clarify step name for fantom

Author: cortinico

.github/workflows/build.yml

@@ -33,6 +33,6 @@ jobs:
           docker run --rm --name rn-env react-native-community/react-native /bin/sh -c "npx envinfo"
       - name: Checkout React Native
         run: git clone https://github.com/facebook/react-native.git
-      - name: Build React Native
+      - name: Run Fantom tests
         run: |
           docker run --rm --ulimit nofile=10240 -v "$(pwd)/scripts/":/scripts -v "$(pwd)/react-native/":/react-native -w /react-native react-native-community/react-native /bin/sh -c "/scripts/test-react-native-fantom.sh"