Improve debug message.

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
[maven-release-plugin] prepare release wisdom-myth-maven-plugin-0.4
[maven-release-plugin] rollback the release of wisdom-myth-maven-plugin-0.4
[maven-release-plugin] prepare release wisdom-myth-maven-plugin-0.4
[maven-release-plugin] prepare release wisdom-myth-maven-plugin-0.4