update travis

.travis.yml

@@ -51,7 +51,7 @@ script:
 
 after_success:
    - git clone --depth=50 -b gh-pages https://$GITAUTH@github.com/acplt/open62541-www
-   - cd open62541
+   - cd open62541-www
    - git rm -rf doc
    - cp -r ../build/doc ./
    - git add -A doc/*
@@ -61,5 +61,5 @@ after_success:
    - git commit -am "doxygen updated by travis-ci"
    - git push https://$GITAUTH@github.com/acplt/open62541-www
    - cd ..
-   - rm -rf open62541
+   - rm -rf open62541-www
    - ./tools/.coverity.sh