Add cheat sheet links in PyDPF-Core doc #1423

Job	Run time
Retro-compatibility (3.10, windows-latest, 232)	15m 0s
Retro-compatibility (3.10, windows-latest, 231)	5m 52s
Retro-compatibility (3.10, windows-latest, 222)	3m 59s
Retro-compatibility (3.10, windows-latest, 221)	4m 55s
Retro-compatibility (3.10, ubuntu-latest, 232)	12m 57s
Retro-compatibility (3.10, ubuntu-latest, 231)	4m 35s
Retro-compatibility (3.10, ubuntu-latest, 222)	3m 15s
Retro-compatibility (3.10, ubuntu-latest, 221)	3m 26s
debug	1s
tests (3.8, windows-latest)	26m 16s
tests (3.8, ubuntu-latest)	16m 11s
tests (3.9, windows-latest)	28m 12s
tests (3.9, ubuntu-latest)	16m 14s
tests (3.10, windows-latest)	21m 53s
tests (3.10, ubuntu-latest)	10m 23s
Style Check	1m 17s
docs / Documentation	13m 56s
examples / Setup	2s
docs / Check doc style / Documentation Style Check	42s
examples / Run Examples (3.10, windows-latest)	10m 49s
examples / Run Examples (3.10, ubuntu-latest)	7m 58s
upload-development-docs	0s
	3h 27m 53s

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