DOC: fix a few dead links in docs, small changes to make 1st time dev instructions bit more clear #195

Job	Run time
standard / pre-commit checks / pre-commit	24s
standard / pre-commit checks / pre-commit	24s
standard / Documentation / Python 3.9: documentation building	1m 3s
standard / Documentation / Python 3.9: documentation building	1m 3s
standard / Conda (3.10) / Python 3.10: conda	2m 57s
standard / Conda (3.10) / Python 3.10: conda	2m 57s
standard / Conda (3.12, true) / Python 3.12: conda	2m 39s
standard / Conda (3.12, true) / Python 3.12: conda	2m 57s
standard / Conda (3.11, true) / Python 3.11: conda	3m 2s
standard / Conda (3.11, true) / Python 3.11: conda	3m 2s
standard / Conda (3.9, true) / Python 3.9: conda	3m 4s
standard / Conda (3.9, true) / Python 3.9: conda	3m 4s
standard / Pip (3.10) / Python 3.10: pip	1m 21s
standard / Pip (3.10) / Python 3.10: pip	1m 21s
standard / Pip (3.11, true) / Python 3.11: pip	1m 15s
standard / Pip (3.11, true) / Python 3.11: pip	1m 15s
standard / Pip (3.12, true) / Python 3.12: pip	1m 29s
standard / Pip (3.12, true) / Python 3.12: pip	1m 29s
standard / Pip (3.9, true) / Python 3.9: pip	1m 17s
standard / Pip (3.9, true) / Python 3.9: pip	1m 17s
standard / Documentation / Documentation deployment	0s
standard / Documentation / Documentation deployment	0s
	37m 20s

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