Update 12.temporary_ins/80.energie-transformations-applications-impacts/20.n2/50.energy-mix/40.TD-hydroelectricity/30.hydroelectric-power-plants/60.parallel-2/cheatsheet.fr.md

Update 12.temporary_ins/80.energie-transformations-applications-impacts/20.n2/50.energy-mix/40.TD-hydroelectricity/30.hydroelectric-power-plants/50.parallel-1/cheatsheet.fr.md

Update 12.temporary_ins/80.energie-transformations-applications-impacts/20.n2/50.energy-mix/40.TD-hydroelectricity/20.gravitational-energy-storage/20.overview/cheatsheet.fr.md