Fix regex error
Fix regex error

methane/PyMySQL,lzedl/PyMySQL,PyMySQL/Tornado-MySQL,jwjohns/PyMySQL,yeyinzhu3211/PyMySQL,anson-tang/PyMySQL,Geoion/Tornado-MySQL,nju520/PyMySQL,wraziens/PyMySQL,DashaChuk/PyMySQL,modulexcite/PyMySQL,pulsar314/Tornado-MySQL,Ting-y/PyMySQL,eibanez/PyMySQL,xjzhou/PyMySQL,jheld/PyMySQL,lzedl/PyMySQL,PyMySQL/PyMySQL,xjzhou/PyMySQL,NunoEdgarGub1/PyMySQL,pymysql/pymysql,MartinThoma/PyMySQL,yeyinzhu3211/PyMySQL,boneyao/PyMySQL,wraziens/PyMySQL,eibanez/PyMySQL,mosquito/Tornado-MySQL