fix travis

Author: sky-admin

.travis.yml

@@ -9,6 +9,7 @@ before_deploy:
   - cd docs
   - npx gitbook-cli install
   - npx gitbook-cli build
+  - cd ..
   - echo "//registry.npmjs.org/:_authToken=\${NPM_TOKEN}" >> $HOME/.npmrc 2> /dev/null
 deploy:
   - provider: pages