fix bug for not finding image page documents correctly
fix bug for not finding image page documents correctly

topicdesign/topkit-server,topicdesign/topkit-server,topicdesign/topkit-server,topicdesign/topkit-builder,topicdesign/topkit-builder,topicdesign/topkit-server,topicdesign/topkit-builder,topicdesign/topkit-builder