Add note about why `rustfmt.toml` is not a symlink

Other AOSP repositories use a symlink back to
`soong/scripts/rustfmt.toml`, but this repositories needs to be
self-contained.

Test: comment change only
Bug: 229825251
Change-Id: Ia050733eaa2a4fe6aec2024b5c4fd5bb1d131327

parent 852804a5

rustfmt.toml

+4 −0

Original line number	Original line	Diff line number	Diff line
	# Android Format Style		# Android Format Style
			#
			# Note that this is not a symlink back to soong/scripts/rustfmt.toml
			# since the ChromeOS team imports this repository. See
			# https://r.android.com/1998210 for details.

	edition = "2021"		edition = "2021"
	use_small_heuristics = "Max"		use_small_heuristics = "Max"