DOC: add instructions to deprecation notice #192

Job	Run time
test_pins	7s
test_install (windows-latest, 3.7, x64)	42s
test_install (windows-latest, 3.7, x86)	41s
test_install (windows-latest, 3.8, x64)	29s
test_install (windows-latest, 3.8, x86)	23s
test_install (windows-latest, 3.9, x64)	23s
test_install (windows-latest, 3.9, x86)	40s
test_install (windows-latest, 3.10, x64)	40s
test_install (windows-latest, 3.10, x86)	44s
test_install (windows-latest, 3.11, x64)	32s
test_install (windows-latest, 3.11, x86)	25s
test_install (macos-latest, 3.7, x64)	10s
test_install (macos-latest, 3.8, x64)	7s
test_install (macos-latest, 3.9, x64)	4s
test_install (macos-latest, 3.10, x64)	1s
test_install (macos-latest, 3.11, x64)	1s
test_install (ubuntu-latest, 3.7, x64)	1s
test_install (ubuntu-latest, 3.8, x64)	1s
test_install (ubuntu-latest, 3.9, x64)	1s
test_install (ubuntu-latest, 3.10, x64)	1s
test_install (ubuntu-latest, 3.11, x64)	1s
	6m 14s

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