data_notebook: fix remaining print statement

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

00:40:38

passed ERP5.CodingStyleTest-TestRunner1

00:41:55

failed ERP5.PerformanceTest-TestRunner1

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passed ERP5.UnitTest-Master

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failed ERP5.UnitTest-TestRunner1

01:07:42

passed SlapOS.Eggs.UnitTest-Master.Python2

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passed SlapOS.Eggs.UnitTest-Master.Python3

00:14:17

failed Wendelin.UnitTest-Master

00:35:44

failed ERP5.UnitTest-TestRunner1

01:19:39

failed ERP5.UnitTest-TestRunner1

00:03:25

failed ERP5.UnitTest-TestRunner1

00:04:00

failed ERP5.UnitTest-TestRunner1

00:03:52

failed ERP5.UnitTest-TestRunner1

00:04:38

failed ERP5.UnitTest-TestRunner1

00:02:59

failed ERP5.UnitTest-TestRunner1

01:13:14

failed ERP5.UnitTest-TestRunner1

01:11:42

canceled ERP5.UnitTest-TestRunner1