fix(publish-docs): create folder when build is release
fix(publish-docs): create folder when build is release

- only override docs in 'current' when build is release

closes #97

camunda/camunda-bpm-spring-boot-starter,ronalders/camunda-bpm-spring-boot-starter,ronalders/camunda-bpm-spring-boot-starter,camunda/camunda-spring-boot-starter,camunda/camunda-spring-boot-starter