Fix typos in comments
Fix typos in comments

Closes #2002

sidsen/redis,liqiang199105/redis,damy/redis,jaambee/redis,janeasystems/redis,jqk6/redis,sidsen/redis,jaambee/redis,Jonavin/redis,kolonse/redis,shanegxxiao/redis,ideaar/redis,miminus/redis,kts12345/redis,kolonse/redis,Cybermaxs/redis,laurencee/redis,liqiang199105/redis,jaambee/redis,alpha8/redis,kolonse/redis,jqk6/redis,alpha8/redis,shanegxxiao/redis,jacklee0810/redis,quangnguyen90/redis,hanmichael/redis,kts12345/redis,alpha8/redis,janeasystems/redis,enginekit/redis,quangnguyen90/redis,LittlePeng/redis,upsoft/redis,adamweixuan/redis,damy/redis,sidsen/redis,ideaar/redis,hanmichael/redis,alpha8/redis,ideaar/redis,ScottKaiGu/redis,damy/redis,Jonavin/redis,laurencee/redis,kts12345/redis,janeasystems/redis,kolonse/redis,jqk6/redis,ScottKaiGu/redis,sidsen/redis,Cybermaxs/redis,jaambee/redis,enginekit/redis,Cybermaxs/redis,Jonavin/redis,liqiang199105/redis,jacklee0810/redis,erwin00776/redis-2.8-optimize,upsoft/redis,sidsen/redis,adamweixuan/redis,laurencee/redis,adamweixuan/redis,hanmichael/redis,Jonavin/redis,erwin00776/redis-2.8-optimize,shanegxxiao/redis,laurencee/redis,LittlePeng/redis,upsoft/redis,quangnguyen90/redis,ideaar/redis,miminus/redis,alpha8/redis,kolonse/redis,shanegxxiao/redis,jqk6/redis,jacklee0810/redis,miminus/redis,adamweixuan/redis,ScottKaiGu/redis,damy/redis,sidsen/redis,jaambee/redis,liqiang199105/redis,upsoft/redis,hanmichael/redis,Cybermaxs/redis,kts12345/redis,hanmichael/redis,quangnguyen90/redis,miminus/redis,miminus/redis,adamweixuan/redis,ScottKaiGu/redis,upsoft/redis,enginekit/redis,Cybermaxs/redis,liqiang199105/redis,kts12345/redis,ScottKaiGu/redis,jacklee0810/redis,shanegxxiao/redis,damy/redis,enginekit/redis,erwin00776/redis-2.8-optimize,jqk6/redis,janeasystems/redis,Jonavin/redis,janeasystems/redis,jacklee0810/redis,laurencee/redis,quangnguyen90/redis,enginekit/redis,ideaar/redis,LittlePeng/redis,erwin00776/redis-2.8-optimize