PYTHON-3606 - Document best practice for closing MongoClients and cursors #2672

Job	Run time
Build wheels for manylinux_aarch64	11m 49s
Build wheels for win_amd6	5m 5s
Build wheels for manylinux_x86_64	2m 18s
Build wheels for manylinux_i686	2m 49s
Build wheels for macos	4m 28s
Build wheels for manylinux_ppc64le	10m 47s
Build wheels for manylinux_s390x	11m 59s
Build wheels for win32	5m 21s
Make SDist	34s
Download Wheels	7s
	55m 17s

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