Update documentation for pixel artists #12755

Job	Run time
Code style check / Code style check	7s
IWYU / IWYU	3m 32s
MSVC / MSVC (SDL2 x86)	4m 18s
SonarCloud Analyzer / SonarCloud Analyzer	3m 50s
MSVC / MSVC (SDL2 x64)	4m 12s
CodeChecker / CodeChecker	30m 49s
CMake / CMake (Windows SDL2)	6m 31s
CMake / CMake (Linux SDL2)	2m 17s
Android / Android	9m 40s
CMake / CMake (macOS SDL2)	1m 34s
CMake / CMake (macOS SDL2 App Bundle)	1m 38s
Make / Make (Linux x86-64 SDL2 Release)	3m 44s
Make / Make (PS Vita)	11m 9s
Make / Make (Linux x86-64 SDL2 Debug)	3m 53s
Make / Make (Linux ARM64 SDL2 Release)	4m 49s
Make / Make (Nintendo Switch)	3m 41s
Make / Make (Linux ARM64 SDL2 Debug)	5m 22s
Make / Make (macOS SDL2)	4m 37s
Make / Make (macOS SDL2 App Bundle)	1m 53s
	1h 47m 36s

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