Update README.md API docs url #91

Job	Run time
build (ubuntu-22.04, Debug, static, 5.15)	1m 9s
build (ubuntu-22.04, Debug, static, 6.6.0)	2m 3s
build (ubuntu-22.04, Debug, dynamic, 5.15)	1m 13s
build (ubuntu-22.04, Debug, dynamic, 6.6.0)	1m 57s
build (ubuntu-22.04, Release, static, 5.15)	1m 14s
build (ubuntu-22.04, Release, static, 6.6.0)	54s
build (ubuntu-22.04, Release, dynamic, 5.15)	51s
build (ubuntu-22.04, Release, dynamic, 6.6.0)	4m 25s
build (windows-2022, Debug, static, 5.15)	2m 51s
build (windows-2022, Debug, static, 6.6.0)	4m 4s
build (windows-2022, Debug, dynamic, 5.15)	2m 25s
build (windows-2022, Debug, dynamic, 6.6.0)	3m 27s
build (windows-2022, Release, static, 5.15)	1m 43s
build (windows-2022, Release, static, 6.6.0)	2m 3s
build (windows-2022, Release, dynamic, 5.15)	2m 3s
build (windows-2022, Release, dynamic, 6.6.0)	1m 23s
build (macos-13, Debug, static, 5.15)	1m 58s
build (macos-13, Debug, static, 6.6.0)	3m 23s
build (macos-13, Debug, dynamic, 5.15)	1m 45s
build (macos-13, Debug, dynamic, 6.6.0)	2m 33s
build (macos-13, Release, static, 5.15)	1m 9s
build (macos-13, Release, static, 6.6.0)	3m 7s
build (macos-13, Release, dynamic, 5.15)	1m 5s
build (macos-13, Release, dynamic, 6.6.0)	2m 48s
build (ubuntu-22.04, Release, dynamic, 6.6.0, llvm, shiboken6-generator==6.6.0 pyside6==6.6.0)	1m 39s
	53m 12s

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