More didactic documentation #581

Job	Run time
Check format	14s
Dialyzer (25.1.x, 1.15.x)	1m 19s
Dialyzer (26.1.x, 1.15.x)	1m 7s
Check release	57s
Interop tests	2m 22s
OTP 23.x / Elixir 1.12.x	42s
Interop tests OTP ${{ matrix.otp }} / Elixir ${{ matrix.elixir }}	0s
OTP 23.x / Elixir 1.13.x	41s
OTP 23.x / Elixir 1.14.x	42s
OTP 24.x / Elixir 1.12.x	38s
OTP 24.x / Elixir 1.13.x	43s
OTP 24.x / Elixir 1.14.x	42s
OTP 24.x / Elixir 1.15.x	54s
OTP 25.1.x / Elixir 1.14.x	38s
OTP 25.1.x / Elixir 1.15.x	53s
OTP 26.1.x / Elixir 1.15.x	1m 0s
	13m 32s

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