DOCS: Add download PDF button for release #102

Job	Run time
Documentation style check	25s
Check the title of the pull request	3s
Build wheelhouse and smoke tests (ubuntu-latest, 3.7)	2m 43s
Build wheelhouse and smoke tests (ubuntu-latest, 3.8)	2m 10s
Build wheelhouse and smoke tests (ubuntu-latest, 3.9)	2m 46s
Build wheelhouse and smoke tests (ubuntu-latest, 3.10)	2m 11s
Build wheelhouse and smoke tests (ubuntu-latest, 3.11)	2m 51s
Build wheelhouse and smoke tests (windows-latest, 3.7)	4m 3s
Build wheelhouse and smoke tests (windows-latest, 3.8)	4m 19s
Build wheelhouse and smoke tests (windows-latest, 3.9)	4m 9s
Build wheelhouse and smoke tests (windows-latest, 3.10)	3m 48s
Build wheelhouse and smoke tests (windows-latest, 3.11)	4m 27s
Documentation build without examples	27m 40s
Documentation build with examples	0s
Testing and coverage (Windows)	22m 2s
Testing solvers and coverage (Windows)	29m 32s
Testing and coverage (Linux)	37m 28s
Testing IronPython and coverage (Windows)	1m 17s
Testing solvers and coverage (Linux)	40m 25s
Package library	1m 35s
Release project	0s
Upload release documentation	0s
Deploy stable docs index	0s
	3h 13m 54s

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