Correct travis command

.travis.yml

@@ -8,7 +8,7 @@ before_script:
   - git fetch --unshallow
 script:
   - npm run lint
-  - 'npm run docs; if [ ! -z "$(git status docs/ --porcelain)" ]; then echo "Documentation out of date exit 1; fi'
+  - 'npm run docs; if [ ! -z "$(git status docs/ --porcelain)" ]; then echo "Documentation out of date"; exit 1; fi'
   - npm test
   # other script steps might be done before running the actual analysis