docs(services/gdrive): Update Google Drive capabilities list docs

[jihuayu]

We have already supported the list, copy, and rename commands for Google Drive.

opendal/core/src/services/gdrive/backend.rs

Lines 54 to 70 in 398d17d

	ma.set_scheme(Scheme::Gdrive)
	.set_root(&self.core.root)
	.set_native_capability(Capability {
	stat: true,
	read: true,
	list: true,
	write: true,
	create_dir: true,
	delete: true,
	rename: true,
	copy: true,
	..Default::default()
	});

[Xuanwo]

Thanks!

[suyanhanx]

Thanks!