core: use new CKEditor name

FCK Editor is old name

https://ckeditor.com/old/forums/CKEditor-3.x/Should-FCKeditor-change-its-name
19 jobs for for_testrunner_1 in 0 seconds
Status Job ID Name Coverage
  External
failed ERP5.CodingStyleTest-Master

00:48:31

failed ERP5.PerformanceTest-Master

00:28:56

failed ERP5.UnitTest-Master

02:11:46

failed ERP5.UnitTest-Zope2

04:01:05

passed SlapOS.Eggs.UnitTest-Master.Python2

00:16:47

passed SlapOS.Eggs.UnitTest-Master.Python3

00:17:04

passed Wendelin.UnitTest-Master

00:36:23

failed ERP5.CodingStyleTest-Master

00:53:40

failed ERP5.PerformanceTest-Master

00:28:46

failed ERP5.PerformanceTest-Master

00:29:01

failed ERP5.UnitTest-Master

01:56:47

passed ERP5.UnitTest-Zope2

02:32:32

passed SlapOS.Eggs.UnitTest-Master.Python2

00:14:54

passed SlapOS.Eggs.UnitTest-Master.Python2

00:15:24

passed SlapOS.Eggs.UnitTest-Master.Python3

00:17:00

passed SlapOS.Eggs.UnitTest-Master.Python3

00:15:53

passed Wendelin.UnitTest-Master

03:05:07

passed Wendelin.UnitTest-Master

00:34:22

passed Wendelin.UnitTest-Master

00:36:09