pmfg pmapi: use 'utf-8' rather than "utf-8" in encoding literals
pmfg pmapi: use 'utf-8' rather than "utf-8" in encoding literals

wuliming/pcp,adfernandes/pcp,adfernandes/pcp,wuliming/pcp,wuliming/pcp,adfernandes/pcp,adfernandes/pcp,wuliming/pcp,wuliming/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,wuliming/pcp,wuliming/pcp,wuliming/pcp,adfernandes/pcp