Doc: c-api: fix order of PyMemberDef fields

[methane]

The field order is different from its definition.

cpython/Include/descrobject.h

Lines 36 to 47 in 4d1eea5

	/* An array of PyMemberDef structures defines the name, type and offset
	of selected members of a C structure. These can be read by
	PyMember_GetOne() and set by PyMember_SetOne() (except if their READONLY
	flag is set). The array must be terminated with an entry whose name
	pointer is NULL. */
	struct PyMemberDef {
	const char *name;
	int type;
	Py_ssize_t offset;
	int flags;
	const char *doc;
	};

This issue was introduced in https://github.com/python/cpython/pull/99014/files#diff-7cc88f3345d03aaf0505c8c85cf6912c43b87a16e124332e84059f1550061286

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📚 Documentation preview 📚: https://cpython-previews--112879.org.readthedocs.build/

[miss-islington-app]

Thanks @methane for the PR 🌮🎉.. I'm working now to backport this PR to: 3.12.
🐍🍒⛏🤖

[bedevere-app]

GH-112937 is a backport of this pull request to the 3.12 branch.