component/tesseract: Workaround for slaprunner paths with double slashs

This is basically the same problem as in 1b291415
(component/ghostscript: Workaround for slaprunner paths with double
slashs, 2021-06-02)
4 jobs for fix/tesseract-slaprunner in 0 seconds
Status Job ID Name Coverage
  External
failed ERP5.UnitTest-TesseractDoubleSlash

02:25:32

passed SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP2

12:51:37

running SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP2

29362:28:05

passed ERP5.UnitTest-TesseractDoubleSlash

03:57:08