pom-plugin-maven-resources.xml

<plugin>
  <artifactId>maven-resources-plugin</artifactId>
  <version>2.7</version>
  <executions>
    <execution>
      <id>copy-resources</id>
      <phase>prepare-package</phase>
      <goals>
        <goal>copy-resources</goal>
      </goals>
      <configuration>
        <outputDirectory>${project.build.outputDirectory}/static/docs</outputDirectory>
        <resources>
          <resource>
            <directory>${project.build.directory}/generated-docs</directory>
          </resource>
        </resources>
      </configuration>
    </execution>
  </executions>
</plugin>