Fix malformed installer URLs for Windows 386 (32-bit) #37

Job	Run time
test-on-linux (ubuntu-latest, 3.12.2, https://mirrors.huaweicloud.com/python/)	2m 4s
test-on-windows (windows-latest, 3.12.2, https://mirrors.huaweicloud.com/python/)	1m 1s
test-on-linux (ubuntu-latest, 3.12.2)	1m 57s
test-on-windows (windows-latest, 3.12.2)	1m 9s
	6m 11s

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