Fix some typos

8 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

00:44:55

passed ERP5.PerformanceTest-Master

00:26:59

failed ERP5.UnitTest-Master

01:42:02

failed ERP5.UnitTest-Master.Medusa

01:58:42

passed SlapOS.Eggs.UnitTest-Master.Python2

00:12:24

passed SlapOS.Eggs.UnitTest-Master.Python3

00:23:57

passed SlapOS.Eggs.UnitTest-Master.Python2

00:14:40

passed SlapOS.Eggs.UnitTest-Master.Python3

00:15:15