readthedocs: add sphinx-finished.sh #2262

Job	Run time
coverity-test	0s
build-test (ubuntu-20.04, gcc)	4m 31s
scanbuild	6m 43s
build-test (ubuntu-20.04, clang)	4m 27s
test-coverage	5m 15s
test-fuzz	2m 27s
build-test (fedora-32, gcc)	4m 46s
build-test (fedora-32, clang)	5m 6s
test-mbedtls (ubuntu-20.04)	2m 48s
test-no-crypto-build	1m 15s
build-test (opensuse-leap, gcc)	4m 39s
test-mbedtls (ubuntu-22.04-mbedtls-3.1)	2m 53s
test-tcti-config	14m 44s
build-test (opensuse-leap, clang)	4m 49s
build-test (ubuntu-22.04, gcc)	4m 24s
build-test (ubuntu-22.04, clang)	4m 52s
build-test (alpine-3.15, gcc)	4m 5s
build-test (alpine-3.15, clang)	4m 50s
	1h 22m 34s

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