fix: change build file

Author: technote-space

bin/gh-pages/pre_install.sh

@@ -16,6 +16,6 @@ yarn --cwd ${TRAVIS_BUILD_DIR} build
 
 cp -f ${current}/plugin.js ${GH_WORK_DIR}/
 cp -f ${current}/plugin.scss ${GH_WORK_DIR}/
-cp -f ${TRAVIS_BUILD_DIR}/jquery.marker-animation.min.js ${GH_WORK_DIR}/
+cp -f ${TRAVIS_BUILD_DIR}/build/index.js ${GH_WORK_DIR}/
 
 yarn --cwd ${GH_WORK_DIR} add jquery