Aligns Makefile fmt target with buildkite pipeline

I discovered that the arguments used in our buildkit pipeline was not
the same that was being used when we ran make fmt on the commandline.
This commit makes the Makefile target match what we use in buildkite.

Makefile

@@ -205,7 +205,7 @@ $(foreach component,$(ALL),$(eval $(call CLEAN,$(component))))
 RUSTFMT_TOOLCHAIN := $(shell cat RUSTFMT_VERSION)
 define FMT
 fmt-$1: image ## formats the $1 component
-	$(run) sh -c 'cd components/$1 && cargo +$(RUSTFMT_TOOLCHAIN) fmt'
+	$(run) sh -c 'cd components/$1 && cargo +$(RUSTFMT_TOOLCHAIN) fmt --all -- --check'
 .PHONY: fmt-$1
 
 endef