readthedocs: add sphinx-finished.sh #788

Job	Run time
scanbuild	6m 38s
build-test (ubuntu-20.04, gcc)	4m 36s
build-test (ubuntu-20.04, clang)	4m 38s
test-coverage	5m 23s
build-test (fedora-32, gcc)	4m 46s
test-fuzz	2m 29s
test-mbedtls (ubuntu-20.04)	2m 58s
build-test (fedora-32, clang)	5m 6s
test-mbedtls (ubuntu-22.04-mbedtls-3.1)	2m 41s
test-no-crypto-build	1m 34s
build-test (opensuse-leap, gcc)	4m 32s
test-tcti-config	14m 55s
build-test (opensuse-leap, clang)	4m 41s
coverity-test	0s
build-test (ubuntu-22.04, gcc)	4m 41s
build-test (ubuntu-22.04, clang)	7m 11s
build-test (alpine-3.15, gcc)	3m 56s
build-test (alpine-3.15, clang)	4m 48s
	1h 25m 33s

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