[DOC] corrected developer comment

Corrected my comment because it was ambiguous.

Change-Id: I865bd1def5811ca4d4ec9d5f16a7f260598b6d17
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/908
Reviewed-by: Franz Zieris <zieris@inf.fu-berlin.de>
Tested-by: Jenkins CI