[scanbase] fix typo on subsampling

4 jobs for add_intensity_normalization in 11 minutes and 6 seconds (queued for 10 seconds)
Status Job ID Name Coverage
  Build
passed check_style #232715

00:02:30

 
  Test
passed test:python3.7_stretch_pyqt5 #232716

00:07:14

81.0%
passed test:python3.9_stretch_pyqt5 #232717

00:08:34

81.0%
passed test:test-tomoscan-tutorials #232718

00:07:03