PYTHON-5129 - Fix async transaction docstrings #1615

Job	Run time
Build wheels for manylinux_x86_64	2m 20s
Build wheels for manylinux_aarch64	11m 18s
Make SDist	46s
Build wheels for manylinux_ppc64le	11m 25s
Build wheels for manylinux_s390x	11m 26s
Build wheels for manylinux_i686	2m 27s
Build wheels for win_amd6	5m 54s
Build wheels for win32	5m 5s
Build wheels for macos	4m 40s
Download Wheels	5s
	55m 26s

Provide feedback