Fix link to pages

README.md

@@ -60,3 +60,4 @@ branch of CE.
 [contributing]: https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#merge-request-guidelines
 [doc-styleguide]: https://docs.gitlab.com/ce/development/doc_styleguide.html
 [job]: https://gitlab.com/gitlab-org/gitlab-ce/blob/2c00d00ec1c39dbea0e0e54265027b5476b78e3c/.gitlab-ci.yml#L308-318
+[pages]: https://pages.gitlab.io