Remove confusion by rephrasing #3655

Job	Run time
Labs (ubuntu-latest)	43s
Python scripts black lint check	10s
Labs-Slides	54s
Contrib scripts check	1m 14s
List-Courses	5s
Slides (spark_essentials)	6m 20s
Slides (rust_essentials)	8m 9s
Slides (toolchain)	1m 24s
Slides (misc_tools)	2m 29s
Slides (static_analysis_via_compiler)	1m 47s
Slides (gnat_studio)	2m 35s
Slides (ada_essentials)	21m 41s
Slides (advanced_exception_analysis)	1m 42s
Slides (gnatsas/standard_course.txt)	2m 7s
Slides (gnat_project_facility)	2m 55s
Slides (gnatdas/standard_course.txt)	2m 40s
Slides (ada_essentials/advanced.txt)	3m 59s
Slides (gnatdas)	4m 14s
Slides (rust_essentials/comprehensive_course.txt)	3m 5s
Slides (gnatsas)	4m 49s
Slides (gnat_studio/course.txt)	2m 22s
Slides (toolchain/gnat_toolchain.txt)	1m 52s
Slides (rust_essentials/standard_course.txt)	2m 33s
Slides (gnat_project_facility/standard_course.txt)	1m 54s
Slides (ada_essentials/standard_course.txt)	3m 50s
Slides (spark_essentials/standard_course.txt)	3m 25s
	1h 28m 58s

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