Add cheat sheet links in PyDPF-Core doc #1426

Job	Run time
debug	2s
Retro-compatibility (3.10, windows-latest, 232)	15m 53s
Retro-compatibility (3.10, windows-latest, 231)	5m 45s
Retro-compatibility (3.10, windows-latest, 222)	4m 50s
Retro-compatibility (3.10, windows-latest, 221)	5m 20s
Retro-compatibility (3.10, ubuntu-latest, 232)	12m 27s
Retro-compatibility (3.10, ubuntu-latest, 231)	4m 45s
Retro-compatibility (3.10, ubuntu-latest, 222)	3m 58s
Retro-compatibility (3.10, ubuntu-latest, 221)	3m 35s
Style Check	1m 3s
tests (3.8, windows-latest)	26m 21s
tests (3.8, ubuntu-latest)	16m 11s
tests (3.9, windows-latest)	26m 0s
tests (3.9, ubuntu-latest)	10m 11s
tests (3.10, windows-latest)	27m 15s
tests (3.10, ubuntu-latest)	12m 37s
docs / Documentation	11m 29s
examples / Setup	1s
docs / Check doc style / Documentation Style Check	45s
examples / Run Examples (3.10, windows-latest)	12m 29s
examples / Run Examples (3.10, ubuntu-latest)	8m 34s
upload-development-docs	0s
	3h 29m 31s

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