Update .travis.yml

Co-Authored-By: Matej Lednicky <matej.lednicky@typeform.com>

.travis.yml

@@ -90,7 +90,7 @@ jobs:
       if: fork = true AND (branch = master OR branch = release)
       script:
         - yarn start --no-info & export EMBED_PID=$!
-         - yarn test:functional:firefox
+        - yarn test:functional:firefox
         - kill $EMBED_PID
     - name: "Deploy"
       # Deploy to preview preview URL for testing purposes. Only deploy pull requests to 'release' branch.