Shorten overview "big picture" #2188

Job	Run time
Labs (ubuntu-latest)	43s
Labs-Slides	1m 0s
Contrib scripts check	1m 33s
List-Courses	5s
Python scripts black lint check	9s
Slides (static_analysis_via_compiler)	1m 12s
Slides (fundamentals_of_ada)	9m 21s
Slides (gnat_project_facility)	1m 46s
Slides (gnat_studio)	1m 26s
Slides (toolchain)	1m 15s
Slides (gnatsas)	2m 23s
Slides (gnatdas)	2m 17s
Slides (spark_for_ada_programmers)	2m 58s
Slides (advanced_exception_analysis)	1m 29s
Slides (fundamentals_of_ada/opat.txt)	2m 26s
Slides (fundamentals_of_ada/standard_course.txt)	2m 9s
Slides (fundamentals_of_ada/advanced.txt)	1m 55s
Slides (gnat_project_facility/standard_course.txt)	1m 33s
Slides (gnat_studio/course.txt)	1m 13s
Slides (toolchain/gnat_toolchain.txt)	1m 31s
Slides (spark_for_ada_programmers/course.txt)	1m 56s
	40m 20s

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