fixed tests for epubbuilder
fixed tests for epubbuilder

suzuki/review,suzuki/review,masawada/review,kuad9/review_study,kdmsnr/review,orangain/review,takahashim/review,masawada/review,kmuto/review,krororo/review,krororo/review,krororo/review,kmuto/review,takahashim/review,kmuto/review,murashitas/review,orangain/review,kuad9/review_study,murashitas/review