Fixed typo

Author: Pubudu Perera

.travis.yml

@@ -24,7 +24,7 @@ script:
     --build-arg REVISION=${TRAVIS_COMMIT}
     --build-arg AWS_DEFAULT_REGION=${AWS_DEFAULT_REGION}
     -t wego/${SERVICE_NAME}:${TRAVIS_COMMIT}
-    - wego/${SERVICE_NAME}:latest
+    -t wego/${SERVICE_NAME}:latest
 
 before_cache:
   - docker run --rm -v `pwd`/build-cache:/app/build-cache ${SERVICE_NAME}:${TRAVIS_COMMIT} bash docker-utils.sh save-cache