[CARBONDATA-2222] Update the FAQ doc for some mistakes
[CARBONDATA-2222] Update the FAQ doc for some mistakes

Update the FAQ doc for some mistakes

This closes #2029

ravipesala/incubator-carbondata,sgururajshetty/carbondata,ravipesala/incubator-carbondata,manishgupta88/incubator-carbondata,ravipesala/incubator-carbondata,manishgupta88/carbondata,jackylk/incubator-carbondata,manishgupta88/carbondata,sgururajshetty/carbondata,ravipesala/incubator-carbondata,sgururajshetty/carbondata,jackylk/incubator-carbondata,zzcclp/carbondata,manishgupta88/carbondata,zzcclp/carbondata,manishgupta88/incubator-carbondata,jackylk/incubator-carbondata,manishgupta88/incubator-carbondata,jatin9896/incubator-carbondata,zzcclp/carbondata,jatin9896/incubator-carbondata,jackylk/incubator-carbondata,zzcclp/carbondata,jatin9896/incubator-carbondata,manishgupta88/carbondata,manishgupta88/incubator-carbondata,zzcclp/carbondata