Fix travis.yml

.travis.yml

@@ -17,7 +17,7 @@ before_script:
 
 script:
   - |
-  docker run --rm \
+    docker run --rm \
     --env-file <(env | grep -iE 'DEBUG|NODE_|ELECTRON_|YARN_|NPM_|CI|CIRCLE|TRAVIS|APPVEYOR_|CSC_|_TOKEN|_KEY|AWS_|STRIP|BUILD_') \
     -v ${PWD}:/project \
     -v ~/.cache/electron:/root/.cache/electron \