add rustfmt to toolchain components

lqd · lqd · commit c86992d905f6 · 2023-11-11T11:01:49.000Z
diff --git a/rust-toolchain b/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
 channel = "nightly-2023-10-08"
-components = [ "rustc-dev", "llvm-tools" ]
+components = ["rustc-dev", "llvm-tools", "rustfmt"]
