fix skip space typo: 'daysor' at line 149 to 'days or'.
fix extra letter typo: 'that,' at line 29 to 'that'.
fix extra space typo: 'mess age' at line 101 to 'message'.
fix skip space typo: 'inyour' at line 151 to 'in your'.
fix wrong letter typo: 'dpends' at line 19 to 'depends'.
fix wrong letter typo: 'friend' at line 89 to 'friends'.
team: 52265903004 52265903003 51255903082 51255903065
fix https://github.com/X-lab2017/oss101/issues/71
fix skip space typo: 'daysor' at line 149 to 'days or'. fix extra letter typo: 'that,' at line 29 to 'that'. fix extra space typo: 'mess age' at line 101 to 'message'. fix skip space typo: 'inyour' at line 151 to 'in your'. fix wrong letter typo: 'dpends' at line 19 to 'depends'. fix wrong letter typo: 'friend' at line 89 to 'friends'. team: 52265903004 52265903003 51255903082 51255903065