code refresh
code refresh

from
https://github.com/pffy/googlescript-chinese-frequency/commit/c26832fba3
255b55f5b8db45c9367fedb8f97766

pffy/googledocs-addon-chinese-frequency,pffy/googledocs-addon-chinese-frequency,pffy/googledocs-addon-chinesefrequency,pffy/googledocs-addon-chinesefrequency