ci: fix shell

Author: cxtom

.travis.yml

@@ -11,8 +11,8 @@ script:
   - npm run test && npm run build
 after_success:
   - npm run report-coverage
-  - if [ "$TRAVIS_BRANCH" = "master" -a "$TRAVIS_PULL_REQUEST" = "false" ]; npm run deploy-docs; fi
-  - if [ "$TRAVIS_BRANCH" = "master" -a "$TRAVIS_PULL_REQUEST" = "false" ]; npm run semantic-release; fi
+  - if [ "$TRAVIS_BRANCH" = "master" -a "$TRAVIS_PULL_REQUEST" = "false" ]; then npm run deploy-docs; fi
+  - if [ "$TRAVIS_BRANCH" = "master" -a "$TRAVIS_PULL_REQUEST" = "false" ]; then npm run semantic-release; fi
 branches:
   except:
     - /^v\d+\.\d+\.\d+$/